The given information best demonstrates the statement (D) "The formation of new niches can cause sudden or gradual geological disturbances that influence the evolution of life on Earth."
An asteroid collision that nearly wiped out all of the dinosaurs created new niches, which allowed the progenitors of modern birds to swiftly diversify and fill the voids left by the dinosaurs.
Following this, bird species increased in diversity, especially in areas where mountains had recently emerged. The formation of these mountains and the ecosystems it brought about resulted in the creation of new niches, which allowed birds to specialize and develop into new species.
As a result, both abrupt and slow geological upheavals may result in the development of new niches, and these disturbances can greatly affect the evolution of life on Earth. Therefore, option (D) is correct.
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The NFC of Arctic national wildlife refuge, garage portion of Alaska that is protected from construction, which was affect the land area shirts with available living thing which term is used to describe all species that live in a national wildlife refuge
The NFC of Arctic national wildlife refuge, garage portion of Alaska that is protected from construction, which was affect the land area shirts with available living thing which term is used to describe all species that live in a national wildlife refuge is wildlife.
What is a wildlife?
wildlife is referred to as the undomesticated animal species, although it now includes all animals that evolve or exist in the wild in an environment free of human intervention.
In the example of Arctic National Wildlife Refuge, the wildlife includes a diverse range of species ranging from polar bears, caribou, muskoxen, wolves, and migratory birds.
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What are the 3 basic cellular structures that every cell needs? What's their individual function and why are each of the 3 basic cellular structures needed?
The three basic cellular structures that every cell needs are the cell membrane, the cytoplasm, and the genetic material. The cell membrane functions to regulate what enters and exits the cell, the cytoplasm provides a medium for cell organelles to function in, and the genetic material contains the instructions for cell function and replication.
Cell Membrane: The cell membrane is a thin, flexible barrier that encloses the cell and separates its internal environment from the external environment. It is made up of a phospholipid bilayer and is selectively permeable, meaning it regulates what substances enter and exit the cell.
Cytoplasm: The cytoplasm is a gel-like substance that fills the inside of the cell and contains various cell organelles, such as mitochondria, ribosomes, and the endoplasmic reticulum. The cytoplasm is important because it provides a medium for the organelles to function in and facilitates the movement of materials within the cell.
Genetic Material: The genetic material of the cell is the DNA that contains the instructions for cell function and replication. In prokaryotic cells, the genetic material is found in the cytoplasm, while in eukaryotic cells, it is found in the nucleus.
In summary, every cell needs a cell membrane to regulate what enters and exits the cell, cytoplasm to provide a medium for cell organelles to function in, and genetic material to contain the instructions for cell function and replication.
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What do you think why phytoplankton production is indispensable in producing quality seedstocks for aquaculture?
Phytoplankton are considered in the production of seedstocks for aquaculture as they happen to greatly influence the quality of water, are the major source of dissolved oxygen and influence the pond ecology.
Ponds usually happen to contain an abundant population of phytoplankton. The phytoplankton play a very crucial role in the pond ecology and also influence the quality of water. They are also the major source of dissolved oxygen. They also provide nutrition and remove the excess nutrition.
Although phytoplankton generally are very beneficial to the aquaculture, under some conditions, they can also prove to be quite problematic in the production of fish and shrimp.
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What is the definition of a pure substance?
a being made of only one thing
b Dirt
c Silver
d A combination of things
Answer:
A combination of things
Explanation:
A pure substance is a single kind of matter that cannot be separated into other kinds of matter by any physical means. A pure substance always has a definite and constant composition. A mixture is a physical combination of two or more pure substances in which each substance retains its own chemical identity.
Hope this helps :)
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What resources from the flower garden banks national marine sanctuary do humans use
A general type of marine protected area (MPA) is a marine sanctuary. A government-designated MPA is a region of the ocean where human activity is restricted.
Thus, Different MPA kinds permit various activities, including scientific research, leisure pursuits, and commercial fishing. It is significant to note that MPAs and marine sanctuaries have various names throughout the world.
The laws governing marine protection in certain nations determine the limitations on extractive operations. Marine sanctuaries frequently feature various zones that permit various activities.
The staff of a marine sanctuary also informs the public on appropriate conduct. As a result, people can sustainably use marine sanctuaries for fishing, tourism, and pleasure.
Thus, A general type of marine protected area (MPA) is a marine sanctuary. A government-designated MPA is a region of the ocean where human activity is restricted.
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Which statement best describes how a virus replicates
The statement best describes how a virus replicates is A) A virus injects its genetic material into the host cell, which then uses the viral genetic material to produce new viruses.
Virus replication involves the process of infecting a host cell and using the host's machinery to produce new viruses. The replication process varies depending on the type of virus, but the most common method is for the virus to inject its genetic material into the host cell.
Once the viral genetic material is inside the host cell, it takes over the host's cellular machinery to produce new viruses. The host cell's normal functions are disrupted as it becomes a factory for producing new viruses. The viral genetic material is replicated, and viral proteins are synthesized, which are then assembled into new virus particles. These new viruses then exit the host cell to infect new cells and continue the replication process.
Therefore, the correct answer is A) A virus injects its genetic material into the host cell, which then uses the viral genetic material to produce new viruses.
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The question is incomplete. the complete question is:
Which statement best describes how a virus replicates
A) A virus injects its genetic material into the host cell, which then uses the viral genetic material to produce new viruses.
B) A virus uses its own genetic material to produce new viruses inside the host cell.
C) A virus fuses with the host cell membrane and releases its genetic material into the host cell, which then produces new viruses.
D) A virus undergoes binary fission to produce new viruses inside the host cell.
DDT, once hailed as one of the greatest scientific developments of the modern world, began to fall out of use after 25-30 years of widespread application. Insect resistance contributed to its decline. Scientists were interested in how insects, specifically mosquito populations, were developing resistance after exposure. Many researchers suspected the GSTe2 gene to be involved with resistance based on gene mapping. In order to test their hypothesis, scientists isolated a population of mosquitoes and maintained them in a lab under constant conditions for four months. At the four month mark, the insects were exposed to low levels of DDT daily for an additional four months. At month eight, the population of mosquitoes was split in half and isolated in separate chambers. Half of the population continued to be exposed to low levels of DDT daily for the remainder of the experiment, while half of the mosquitoes were removed and kept in an environment with no DDT exposure for the remainder of the experiment.
DNA samples were taken from the population(s) at months: eight, sixteen, twenty, and twenty-four. The DNA samples were analyzed and tested for mutations to the GSTe2 gene. Vertical bars in the figure represent two standard errors of the mean (SEM). a) Propose a possible hypothesis the researchers were testing. b) Propose an explanation for the results seen after the populations were separated. c) Describe the change in genetic variation over time once the population is split in half. Justify your response based on the SEM. d) When DDT was being used widely, it took approximately 6-7 years before scientists began seeing resistance in mosquito populations. Propose one reason for why it took so long to see resistance in nature in comparison to how long it took to see resistance in this experiment.
The researchers were testing the hypothesis that the GSTe2 gene is involved in insect resistance to DDT.
The populations were separated suggest that the mosquitoes exposed to low levels of DDT for the full eight months developed a higher frequency of mutations in the GSTe2 gene compared to the mosquitoes that were not exposed to DDT during the last four months of the experiment.
The change in genetic variation over time once the population is split in half shows that the mosquitoes exposed to DDT had a higher frequency of mutations in the GSTe2 gene compared to the non-exposed mosquitoes.
Natural populations of mosquitoes are subject to a variety of environmental factors, including competition, predation, and disease, which can influence the rate at which resistance develops.
DDT was widely used as an insecticide in the mid-20th century to control a variety of insect pests, including mosquitoes that transmit diseases such as malaria and yellow fever. However, over time, many insect populations, including mosquitoes, developed resistance to DDT, rendering it less effective as an insecticide.
The researchers in this experiment were interested in understanding the genetic basis of insect resistance to DDT. Specifically, they suspected that the GSTe2 gene played a role in this process, based on previous gene mapping studies. To test their hypothesis, they exposed a population of mosquitoes to low levels of DDT for four months, after which they split the population in half and continued to expose one group to DDT while keeping the other group in a DDT-free environment.
The results of the experiment showed that the group of mosquitoes exposed to DDT for the full eight months had a higher frequency of mutations in the GSTe2 gene compared to the non-exposed group. This suggests that exposure to DDT may have selected for mosquitoes with mutations in the GSTe2 gene, which provided them with a selective advantage in the presence of the insecticide.
The changing genetic variation over time is evidenced in the graph by the widening of the vertical bars, which represent two standard errors of the mean. This indicates that as time progressed, the genetic variation in the DDT-exposed group increased, likely due to the selection pressure imposed by the insecticide.
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Anna is a wildlife photographer. She wants to photograph woodpeckers, snowy owls, and hawks. In which biome can Anna find these birds?
Anna can find woodpeckers, snowy owls, and hawks in the boreal forest biome.
The boreal forest biome is characterized by its vast stretches of dense, evergreen forests that span across the northern hemisphere. This biome is also known as the taiga, and it is home to a wide variety of bird species, including woodpeckers, snowy owls, and hawks.
Woodpeckers are found in boreal forests due to the abundance of trees, which provide them with habitat for nesting and feeding. The snowy owl is also commonly found in the boreal forest, where it preys on small rodents such as lemmings. Hawks are also known to reside in the boreal forest, where they hunt for small mammals, birds, and insects.
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Cassidy conducts a scientific investigation about types of birds in her community. She goes to a park each day at 5:00 P.M. for seven days to take notes on birds she observes. Cassidy writes up her notes. Which verification process does this scenario represent
The scenario represents the process of data collection in a scientific investigation.
The scientific method involves several steps, including making observations, formulating a hypothesis, conducting experiments or collecting data, analyzing the data, and drawing conclusions. In this scenario, Cassidy is making observations about types of birds in her community by going to a park and taking notes on birds she observes each day for seven days. This is an example of data collection, which is a crucial step in the scientific method as it provides evidence to support or refute a hypothesis.
After collecting the data, Cassidy may analyze it to look for patterns or relationships among the types of birds she observed. She may use this information to draw conclusions about the types of birds in her community and to develop further hypotheses or questions for future research.
Overall, the scenario represents the process of data collection in a scientific investigation.
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QUICK CAN SOMEONE HELP ME WITH THIS???? I NEED HELP LIKE NOW JUST LOOK AT THE PICTURE
A graphical representation of the movement of energy through several trophic levels in an ecosystem is called an energy pyramid. At the base of the pyramid are producers like plants, algae, and autotrophs, which are followed by herbivores, carnivores, and apex predators.
Each trophic level in the pyramid reflects a transfer of energy from one creature to another as the amount of energy available diminishes as we advance up the pyramid. The energy pyramid emphasises the value of producers in sustaining ecosystem energy flow and nutrient cycle.
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Question 6 of 10
How can scientists best use scientific argumentation to evaluate a scientific
claim?
A. They can analyze only the data that support the claim.
O B. They can develop a hypothesis that explains why the data support
the claim.
O C. They can analyze the data related to the claim to see whether
there are multiple possible explanations:
OD. They can conduct repeated experiments until they obtain data that
support the claim.
Scientists can analyze the data related to the claim to see whether there are multiple possible explanations.
The use of data to prove or disprove a scientific statement is known as scientific reasoning. It requires data analysis and interpretation, the formulation and testing of hypotheses, and the consideration of possible explanations for observed results. Scientists can determine whether the evidence supports a claim by examining the data that supports it, or if an alternative explanation is possible that would better explain the data.
Therefore, the correct option is C.
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Please help
Nitrogenous bases in DNA pair according to a strict pattern. Who bonds with who?
Select one:
a.
Adenine to Guanine
Guanine to Thymine
b.
Adenine to Cytosine
Guanine to Thymine
c.
Adenine to Thymine
Guanine to Cytosine
Clear my choice
Option c. Adenine to Thymine and Guanine to Cytosine correctly describe the matching between nucleotide bases in DNA.
What is the base pair complementarity in DNA?The base pair complementarity in DNA refers to the interaction of nucleotide bases in the double helix of DNA, which occurs because Adenine or A always pairs with Thymine or T, while Guanine or G always pairs with Cytosine or C.
Therefore, with this data, we can see that the base pair complementarity in DNA is A with T and C with G.
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HERE’S A BETTER PIC! The question is assume the amount of energy produced by the primary producers was 200 kcal/m2/year? Estimate the amount of energy transferred as you go up the pyramid
The energy recieved at the top of the pyramid is given as 0.02kcal/m2/year.
What is the energy transferred?We have to know that as we go up the pyramid that the energy that is transferred from one organism to another does decrease in that order. Looking at the image we have, we can see that the organism at the top would only get 0.01% of the energy that the primary producers has obtained from the sun.
The amount of energy that the organism at the top of the pyramid would get is obtained as;
0.01/100 * 200 kcal/m2/year
= 0.02kcal/m2/year
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Precession of Earth's axis causes
A axial tilt
B a change in the North Pole star
C seasons
D day and night
Precession of Earth's axis causes a axial tilt.
The angle between an object's rotational axis and its orbital axis, which is the line perpendicular to its orbital plane, or, more precisely, the angle between its equatorial plane and orbital plane, is known as axial tilt, sometimes known as obliquity.
Unlike orbital inclination, it is different. The two axes point in the same direction with an obliquity of 0, meaning the rotational axis is parallel to the orbital plane.
The Earth's rotational axis, for instance, is the hypothetical line that traverses both the North and South Poles, while the Earth's orbital axis is the line perpendicular to the hypothetical plane through which the Earth moves as it revolves around the Sun. The angle between these two is known as the Earth's obliquity or axial tilt.
Thus, Precession of Earth's axis causes a axial tilt.
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What happened during S phase ?
Answer:
S phase is the period of wholesale DNA synthesis during which the cell replicates its genetic content this is also known as the interphase.
Please help!! The characteristics of a living thing depend on the characteristics of its environment. which of these characteristics of a river could affect the plants loving in it? a) how deep the water is b) the temperature of the water c)the speed of the water flow
Explanation:
a) answer,
=10,935 meters
=35,876 feet .
b) answer,
= water freeze at 32 degrees and boils at 212 degrees;
c) answer,
To calculate the water flow (in m3) multiply the average water velocity (in m/s) by the average width (in m) and by the average depth (in m). Water flow = 0.425 m/s x 1 m x 0.6 m = 0.255 m3/s.
Why is it more helpful to the environment to reduce rater than to reususe or recycle
Answer:
It takes a lot of energy to recycle materials into new products. In fact, the energy expenditure in recycling can be more than what it takes to produce products from scratch because the process is often more complex.
Explanation:
The graph below shows a normal distribution for adult body size in a population of a particular species of fish.
Suppose commercial fishers begin using nets that selectively catch larger fish of this species. They continue using these kinds of nets for many years.
(a) Describe how the size distribution of adult fish in the population would most likely change over time.
(b) Explain, in detail, how natural selection would produce the change you described in part.
(c) Even if the use of nets that selectively catch larger fish were stopped, some biologists believe that the size distribution in the fish population would not return to normal. Explain why.
As the net used by fishermen selectively catches the fish which have a larger body size, the peak of the graph will shift towards the left as the population of small body-sized fish will increase.
The water body contains adult fishes in small as well as large body size and the fishermen start using nets which selectively catch the fishes with the larger body size and they keep using these nets for many years. This will basically result in the higher population of the small sized fish in the water body and the peak of the group will therefore shift towards the left.
The natural selection will also favor the adult fish with the small body size as they have more chances of survival in the given environment over the large sized adult fishes.
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Why do large scale mutations have such a significant effect on organisms?
Large-scale mutations can have a significant effect on organisms because they involve changes in the DNA sequence that affect the function or expression of one or more genes.
These mutations can result in changes to the structure or function of proteins, which are the building blocks of cells and perform many critical functions in the body.
In some cases, large-scale mutations can also affect multiple genes or entire genetic pathways, leading to more widespread effects on an organism's physiology or behavior. This can result in reduced fitness, decreased survival, or even extinction in some cases.
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Non-recombinant
chromosomes
1.) What do the labels above represent? (for example: capital "A" versus lower-case "a", and
the different letters "A or B or C"?
2.) The crossing-over (regional exchange of genetic information) occurs between homologous
chromosomes. WHY is it critical that only homologous chromosomes exchange information?
3. Why is it important that crossing-over takes place between the chromosomes from two
different parents? (answer on back).
The labels above represent different alleles of genes located on chromosomes. It is critical that only homologous chromosomes exchange information during crossing-over because homologous chromosomes have similar genes in the same order.
The labels above represent different alleles (versions of a gene) that are located on the chromosomes. Capital letters represent dominant alleles, while lower-case letters represent recessive alleles. Different letters represent different genes, and their locations on chromosomes are also different.
It is critical that only homologous chromosomes exchange information during crossing-over because homologous chromosomes have similar structures and genetic content, making it possible for them to align and exchange segments of DNA. If non-homologous chromosomes were to exchange information, the resulting genetic material would be unstable and could lead to genetic disorders or other problems.
It is important that crossing-over takes place between chromosomes from two different parents because it increases genetic diversity in offspring. Each parent contributes one set of chromosomes, and crossing-over allows for the exchange of genetic information between these sets, leading to new combinations of traits. This is important for the survival of a species as it enables adaptation to changing environments and increases the chances of finding new beneficial traits.
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Define transcription
Answer:
Transcription, as related to genomics, is the process of making an RNA copy of a gene's DNA sequence. This copy, called messenger RNA (mRNA), carries the gene's protein information encoded in DNA.
Explanation:
Describe the DNA molecule
Answer:
DNA is made of two linked strands that wind around each other to resemble a twisted ladder — a shape known as a double helix.
Explanation:
Risks of biofilm forming organisms in animal production particularly at abattoirs or veterinary hospitals
The risks of biofilm forming organisms in animal production particularly at abattoirs or veterinary hospitals include the following:
Reduced functionality of disinfectionPersistence of pathogensAntibiotic resistanceWhat are biofilm forming organisms?A biofilm organism is described as an assemblage of surface-associated microbial cells that is enclosed in an extracellular polymeric substance matrix.
Using his simple microscopes, the scientist Van Leeuwenhoek first observed microorganisms on tooth surfaces and can be credited with the discovery of microbial biofilms.
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Could someone help me out with this homework?
Thank You.
A Homozygous cross between two black-eyed mice will result in a 100 percent probability of getting black-eyed mice as the allele for the black eyes is recessive so the black-eyed mice would be homozygous for the recessive allele to be expressed.
Supposing that the allele for the red eye is R and the allele for the black eye is r, then the genotype of a black-eyed mouse would be rr and a homozygous cross between two black-eyed mice would 100 percent give the genotype rr with a black eye phenotype.
So the genotypic ratio and the phenotypic ratio would be 1 as all the offspring would have rr genotype for the eye color.
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A scientist used a microscope to observe a prepared sample on a slide. The scientist's observations are shown.
Smooth Muscle
Nucleus
The drawing illustrates which two levels of biological organization? Choose TWO answers.
cell
tissue
organ
organ system
organism
Cell and tissue are the two biological organisation levels that are represented in the drawing. The smooth muscle is a type of tissue made up of cells, and the nucleus is a cellular organelle.
The smallest unit of life, cells are the fundamental building elements of all living things. Tissues are collections of cells that collaborate to carry out particular tasks.
Organs are created through the combination of cells and tissues. Organ systems, in turn, create organisms.
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Can someone help me out with these questions pls
The correct answer is :
Large surface area for gaseous exchange to take place - c. Millions of alveoli present in each lung.
Diffusion of gases through cell surfaces is facilitated - e. Alveoli and capillaries have a one cell thick wall.
Distance for diffusion is kept short - e. Alveoli and capillaries have a one cell thick wall.
Steep concentration gradient is constantly maintained - d. Each alveolus has a thin film of moisture.
Quick access to the circulatory system - a. Each alveolus is closely surrounded by a network of capillaries.
The lungs contain millions of alveoli, providing a large surface area for gaseous exchange to take place. This large surface area ensures that there is enough space for the exchange of gases between the alveoli and the bloodstream to occur efficiently.
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This histogram shows ranges of possible exam scores and
the number of students who scored within each range.
Based on these data, how many students received a score higher than 95?
Based on these data, the number of students received a score higher than 95 is 6 or fewer.
Option C is correct.
What is histogram?A histogram is described as an approximate representation of the distribution of numerical data and is the term which was first introduced by Karl Pearson.
Histograms show numerical or quantitative data, whereas bar charts show categorical factors.
The numerical data in a histogram will typically be continuous in most cases having infinite values and would be ridiculous to attempt to plot an axis that included every potential value for a continuous variable.
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Species Characteristics
X Short canine teeth, small prey size
Y 1-foot-long canine teeth, large prey size
Which species will most likely survive if the prey population in the area decreases?
A- Species X because it is difficult to bring down a small prey
B- Species X because short canines are less likely to break
C- Species Y because long canines are less likely to break
D- Species Y because it is easy to bring down a large prey
The species will most likely survive if the prey population in the area decreases (A). Species X because it is difficult to bring down a small prey is correct option.
If the prey population declines, species X, which has short canine teeth and is specialized for small prey, would benefit. This is so because of how tough it is for them to take down a large prey due to their physical makeup. In contrast, due to their specialised traits, Species Y, with 1-foot-long canine teeth and an adaptation for huge food, may encounter difficulties when hunting smaller species. Therefore, in a scenario where the population of the prey drops, Species X has a higher chance of surviving.
Therefore the correct option is (A).
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Janice is studying patterns of water usage. She has collected the following data:
Activity Average Amount of Water Used
by American Households (L)
Bathing (per bath) 130
Showering (per minute) 19
Flushing toilet (per flush) 19
Washing clothes (per load) 72
Washing dishes (per load) 61
Which of the following is an observation that Janice has made?
The observation which was made by Janice is that six minute showers are basically better for the environment as compared to the baths.
The correct option is option B.
Janice happened to study the patterns of the usage of water and collected data regarding the amount of water which is consumed in an American household in liters.
She made the observation that six minute showers are basically better for the environment as compared to the baths. This is because the amount of water consumed per bath is 130 L whereas the amount of water consumed in a 6 minute shower is about 114 L (19 ×6 = 114).
Hence, the correct option is option B.
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--The given question is incomplete, the complete question is
"Janice is studying patterns of water usage. She has collected the following data:
Activity Average Amount of Water Used
by American Households (L)
Bathing (per bath) 130
Showering (per minute) 19
Flushing toilet (per flush) 19
Washing clothes (per load) 72
Washing dishes (per load) 61
Which of the following is an observation that Janice has made?
A. On average, it takes 19 L of water to flush a toilet.
B. Six minute showers are better for the environment than baths.
C. If Americans were to wash their clothes and dishes by hand, they would conserve more water.
D. Bathing requires more water than washing a load of clothes."--
Answer: on average, it takes 61 L of water to wash a load of dishes.
Explanation:
Wetlands are limited to freshwater.
Please select the best answer from the choices provided
T
F
Answer:
False
hope it helps! byeeee