Answer:
Because they are genuis
Explanation:
The cholera bacterium was first identified as a disease-causing agent through the groundbreaking work of Dr. John Snow in London in 1854. Dr. Snow mapped the incidence of disease and found that it clustered around a particular water pump. How did he make the causal connection between that pump and the disease
Answer:
Dr. John Snow in London in 1854 discovered that the water where the cholera outbreak was prevalent was the same water used in other places. He came to a conclusion that it must be as a result of the pipes transporting the water. The pipes were found to have sewage surrounding them which made the water contaminated.
When the pipes were removed from the sewage surroundings the contamination, sickness and death rates reduced drastically.
What Is the meristematic tissue that helps in the production of roots in stem cutting
Answer:
apical meristem
Explanation:
it is a meristematic tissue found in the buds and growing tips of roots in plants.
Its purpose is to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.
If you were assigned the task of constructing a cladogram representing the evolutionary relationship between amphibians, turtles, lizards, snakes, crocodiles, birds, and mammals, what feature could you use as the shared derived trait
Answer:
Four Limbs
Explanation:
Answer:
The four limbs
Explanation:
A shared derived trait involves shared characters that lineages have in common, which have evolved in the lineages leading up to a clade and that sets members of that clade apart from other individuals.
The four limbs is found in virtually all amphibians, turtles, lizards, snakes, crocodiles, birds, and mammals. It might not be seen in snakes now, but historically it is believed that ancient snakes once possessed limbs. This feature is a shared derived trait that exist among the selected clade.
DNA is very small, one complete turn of a DNA helix is about _______.
Explanation:
DNA is very small, one complete turn of a DNA helix is about ___3.4 nm___.
DNA is very small, one complete turn of a DNA helix is about 3.4 nm or 34 Angstrom long.
What is DNA?DNA stands for Deoxyribonucleic acid. DNA may be defined as a molecule that is composed of two polynucleotide chains that coil around each other to construct a double helix.
This molecule is also thought to carry genetic information based on the individuals and deliver instructions for the development, functioning, growth, and reproduction of all known living organisms and many viruses.
One complete turn of a DNA helix consists of 10 base pairs. So, the pitch of the helix is found to be 3.4 nm and the two strands are right-angled coiled.
The distance between the two base pairs in a helix is 0.34 nm.
Therefore, DNA is very small, one complete turn of a DNA helix is about 3.4 nm or 34 Angstrom long.
To learn more about DNA, refer to the link:
https://brainly.com/question/16099437
#SPJ5
. There are different methods of sowing the seeds. Which one of the methods given below is not the methods of sowing seeds used by the farmer?
Answer:
A) Broadcasting B) Seed-drill
Explanation:
Options of sowing seeds are given below.
A) Broadcasting B) Seed-drill C) Transplanting D) Scattering E) None of these
Farmers used two methods for sowing of seeds such as broadcasting and seed drilling. Broadcasting is a method of seed sowing in which seeds are scattered in the field by hands or machines while seed drill is another method of sowing in which a device or machine is used which bury the seed at certain depth and at proper position in the field. In seed drilling method, seeds are sowing in lines while in broadcast, seeds are sown in every part of the field.
We use the proportion of individuals with the recessive phenotype to calculate the frequency of the recessive allele (q). Why can't we calculate the frequency of the dominant allele in the same way, that is by using the proportion of the individuals with the dominant phenotype?
Answer and Explanation:
Due to some technical problems, the complete answer and the explanation are attached in the file named H-W
Select the correct answer.
In the three domain system, the domain Eukarya consists of all organisms that have which of the following
Options are not provided in the question, so the complete question is as follows:
In the three domain system, the domain Eukarya consists of all organisms that have which of the following?
A. Contractile vacuole
B. Nucleus
C. Chloroplast
Answer:
B. Nucleus
Explanation:
The three domain system include archaea, bacteria, and eukarya.
Eukarya, consists of all organisms whose cells have a nucleus. Eukarya contains multicellular and visible organisms, such as animals, people, plants and trees.
Bacteria and arachaea contains unicellular organisms and lack a nucleus.
Hence, the correct option is B. Nucleus.
Which is one common property of inorganic substances They are solid at room temperature They are poor conductors of electricity They contain carbon They burn readily
Answer:
They are solid at room temperature
Explanation:
Hope it helps.
Answer:
Answer A
Explanation:
What product of photosynthesis is stored in chemical bonds? A. Water. B. Oxygen. C. Chemical energy. D. Solar energy.
Answer:
I think Chemical Energy
Explanation:
Photosynthesis is the process by which organisms containing the pigment chlorophyll transform light energy into chemical energy that can be stored in the organic molecular bonds (e.g., sugars).
Answer:
C. Chemical energy
Explanation:
water and solar energy are raw material for photosynthesis so they do not apply.
Oxygen is a product but is not stored in the plant.
Chemical energy is stored in glucose (or sugar) which is a product of photosynthesis stored in the plant. So C is the answer.
what is the difference between an organ and organelle
Explanation:
Think of an organelle as a microscopic organ.
An organ is exponentially like your liver.
An organelle is kind of the same concept except it's inside of a cell.
WILL GIVE BRAINLIEST Compare and contrast bacterial and eukaryotic ribosomes.
Answer:
Ribosomes. Eukaryotic ribosomes are larger. They consist of a 60S large subunit and a 40S small subunit, which come together to form an 80S particle having a mass of 4200 kd, compared with 2700 kd for the prokaryotic 70S ribosome. The 40S subunit contains an 18S RNA that is homologous to the prokaryotic 16S RNA.
Hope this helps...
Have a nice day!!!!
Explain briefly 3 farming methods and it's effects on the ecosystem
Answer: easy pasy
Explanation:
Water, agricultural and soil
Thank you for your question
How can ocean pollution be controlled?
Answer:
You could start a group and pick up trash from the ocean and inform people that if we throw trash in the ocean sea animals can die and the ocean will be dirty and one day we will have no water left to drink if all water is dirty
Explanation:
No explanation
Cocklebur will not flower if exposed to 8 hours of dark and 16 hours of light. It will flower if exposed to 16 hours of dark and 8 hours of light. However, if the 16 hours of dark is interrupted with a brief period of light the cocklebur will not flower. What triggers cocklebur to flower
Answer:
Photoperiodism
Explanation:
The process explained in the question is called "Photoperiodism" which refers to the plants' reaction to the length of the dark and light period in a day.
When the dark period is interrupted with a certain period of artificial lighting, the plant thinks that the day had a longer period where it's "light" than it is "dark" so it gets tricked into flowering. Same concept can be applied in reverse for the plants who flower during longer periods of dark.
I hope this answer helps.
The geographic isolation of a population from other members of the species and the subsequent evolution of reproductive barriers between it and the parent species describes ________ speciation
Answer:
The correct answer is - allopatric speciation.
Explanation:
The isolation of two populations of the same species from one another due to the geographic changes this type of speciation or isolation known as allopatric speciation.
Speciation is the slow process in which the preexisting population of one species evolved to new species. Allopatric speciation, also known as vicariant speciation or geographic speciation,
Thus, the correct answer is - allopatric speciation.
What is difference between a nerve cell and a general animal cell
Explanation:
A nerve cell or "neuron" is different because it has a more specialized structure of communication using synapses, axons, dendrites and chemicals that allow it to use an electrochemical communication method via neurotransmitters.
However, like "general cells" they too have membranes, nucleus etc
An adult with a history of tanning has his genome sequenced. The beginning of a protein-coding region of his DNA reads ATGGGGATATGGCAT. If the protein-coding region of a healthy adult reads ATGGGGATATGAGCAT, identify the site and type of mutation.
Answer:
Explanation:
The protein-coding region of a healthy adult reads ATGGGGATATGAGCAT.
The beginning of a protein-coding region of the tanning individual DNA reads ATGGGGATATGGCAT
The site of mutation is close to the end - GGCA - between the two G's, a base (A) has been deleted.
Thus this type of mutation is termed deletion: a process whereby one or more bases are removed from a nucleotide sequence of DNA.
What two characteristics of life are evident in viruses?
Please help me with this question
Answer:
Viruses do, however, show some characteristics of living things. They are made of proteins and glycoproteins like cells are. They contain genetic information needed to produce more viruses in the form of DNA or RNA. They evolve to adapt to their hosts.Living characteristics of viruses include the ability to reproduce – but only in living host cells – and the ability to mutate.
Which flowchart correctly lists the structures in order from smallest to largest?
gene Right-arrow DNA Right-arrow chromosome Right-arrow nucleus
gene Right-arrow chromosome Right-arrow DNA Right-arrow nucleus
DNA Right-arrow gene Right-arrow chromosome Right-arrow nucleus
DNA Right-arrow chromosome Right-arrow gene Right-arrow nucleus
Answer:
gene Right-arrow DNA Right-arrow chromosome Right-arrow nucleus
Explanation:
trust me I'm smart
Listing the structures in order from smallest to largest follows this sequence ( A ) ; Gene right arrow DNA right arrow Chromosome right arrow Nucleus
Gene is the basic unit of heredity in animals, they are made up of DNA strands, while chromosomes ( thread like structures ) are positioned inside the Nucleus of ( plant and animal cells ).
Chromosomes are comprised of proteins and single molecule DNA that are passed from parents to its offspring.
Hence we can conclude that the flowchart that lists the structures in order from smallest to largest follows this sequence ( A ) ; Gene right arrow DNA right arrow Chromosome right arrow Nucleus.
Learn more : https://brainly.com/question/11912112
A grove of pine trees grows in a cluster around the bank of a lake. what is this an example of
Answer: Options are not given, below are the options.
A. Stabilizing effect
B. Intraspecific competition
C. Abiotic factors
D. Interspecific competition.
The correct option is B.
It is intraspecific competition
Explanation:
It is intraspecific competition because the same species of plants are competing for limited available resources.
Intraspecific competition occur between member of the same organism where organism of the same species compete for limited available resources.
A grove of pine trees grows in a cluster around the bank of a lake is an example of intraspecific competition because the pine trees are of the same species and they compete for available limited resources.
You are studying a population of lemurs that live in a rainforest that covers thousands of acres, along the Urubamba river in South America. They feed on fruit and nuts scavenged throughout the abundant rainforest. Recently, industrialization has caused factories upstream to begin polluting the river. In your studies you have noticed their population is beginning to decrease. Which of the following limiting factors are affecting the carrying capacity? I. Space II. Food availability III. Water IV. Environmental conditions
A. III and IV
B. I, II, III, IV
C. I and II
D. II and III
Answer: A. III and IV.
The limiting factors that are affecting the carrying capacity are Water and Environmental conditions. The correct options are A. III and IV
What are environmental factors?
Environmental factors are those factors that are found in the surroundings and the environment. These factors are radiation, chemicals, water, air, etc.
Lemurs are mammals that live in groups, and they are small like mongooses. They eat fruits and nuts, and they are weird creatures. They are living in along the Urubamba river in South America as given.
Due to industrialization in the forest area, the river, and the environment become polluted and due to the wrong environment and scarcity of fresh water. The population of lemur gets decreased.
Thus, the correct option is A. III and IV.
To learn more about environmental factors, refer to the link:
https://brainly.com/question/24353411
#SPJ5
A scientist makes the argument that two species of butterflies should be considered the same species because they have similar DNA, similar wing length, and similar migration patterns. The butterflies also have variations in color patterns and different mating seasons.
Which piece of evidence would most go against the scientist’s argument and suggest that the butterflies are actually different species?
The butterflies have similar wing structure.
The butterflies have different mating seasons.
The butterflies have similar migration patterns.
The butterflies have variations in color patterns.
Answer:
butterflies have different mating seasons
Explanation:
1:they have to have similar structre both internally and general appearance just like us and apes same genus different species
3: migration could vary with the habitat like lack of food in an area could lead them to migrate earlier or later
4:colour variation can also vary because of habitat since some may be darker to camouflage cause of predators like an adaptation.
Answer:
B
Explanation:
i just took the quiz
How would a large geomagnetic storm affect communication on Earth?
Answer:
During geomagnetic storms, the ionosphere gets altered and it resulted in the distraction of the high-frequency radio communications and navigation.
Explanation:
A geomagnetic storm also popularly known by the term a solar storm refers to a transient disruption of the magnetosphere of the earth prompt by a solar wind shock wave that strikes with the magnetic field of the earth. On the surface of the Earth, a magnetic storm is characterized by a sudden decrease in the power of the Earth's magnetic field. The decline spans range about six to twelve hours and following it the magnetic field starts to restore to normal in a few days. It affects the global position system thus disrupting the communication on Earth.
Which of the following statements regarding the fossil record is FALSE? Group of answer choices The fossil record does not contain any fossil remains of plants, only animals Not every minute of Earth’s history is recorded in the rock record Paleontologists have not yet found all the fossils that are in the rocks Not all organisms have a high preservation potential
Answer:
The statement, that is, the fossil record does not contain any fossil remains of plants, only animals is false.
Explanation:
Any trace of past life is termed as the fossil. It can be an organism's remains like shells, plants, bones, or teeth. Any activity of an organism like burrows, footprints, and feces can be known as a fossil record. Five different ways by which the formation of a fossil takes place are natural casts, permineralization, trace fossils, amber preserved, and preserved remains.
The formation of a fossil distinctly takes place, however, the majority of them formed when an animal or plant dies in a watery environment and gets buried underneath the silt and mud. In the process, the soft tissues quickly get decompose and leave behind the shells or hard bones. With time accumulation of sediments takes place over the top and solidifies into a rock.
HELPPP !!!!
What is true about an adaptation?
A. It is a learned trait.
B. An organism is born with it.
C. It prevents reproduction.
D. It harms the organisms.
The answer is: An organism is born with an adaptation. Therefore, the answer is an organism is born with it (B).
Which one of the following statements about lysosomes is incorrect? If one of the many types of acid hydrolases found in the lysosome is nonfunctional, a lysosomal storage disease can develop. Lysosomes are acidic because they contain acid hydrolases. Lysosomes release the monomeric building blocks (like amino acids and nucleotides) into the cell. Autophagosomes form in the cytosol around old or broken down organelles; later, the autophagic vesicle fuses with a lysosome. Resident lysosomal proteins display a mannose-6-phosphate group which targets them to a late endosome.
Answer:
B. Lysosomes are acidic because they contain acid hydrolases.
Explanation:
Lysosomes are small cell organelles that float outside nucleus. Lysosomes are present in the cytosol of the cells.
Lysosomes are acidic in nature having pH below 5 because of proton pumping through the plasma membrane to maintain this acidic pH.
This acidic nature of lysosomes play a role in fight against diseases.
Hence, the correct option is "B".
If all carbon dioxide were removed from the atmosphere,what effect would this have on plants PLEASE HELP!!!!!!
Answer:
plant would die
Explanation:
this is due to the failure to produce their own food due to lack of carbondioxide
Answer:
they would die
Explanation:
In the absence of CO2 (carbon dioxide), we would not have plants and trees as we know it. And if there are no trees, that would mean the lack of oxygen, disabling our ability to breathe freely. ... When sunlight is received into earth's atmosphere, CO2 absorbs the heat and keeps the planet warm.
What event gave Darwin the idea for his theory of Evolution?
Answer:the idea that species change over time, give rise to new species, and share a common ancestor.
Explanation:
to better cope with environment
Natural selection gave Darwin the idea for theory of evolution where organisms produce more offspring which able to survive in their environment.
What is natural selection?Natural selection is an evolutionary mechanism. Lifeforms that are better adapted to their surroundings are more likely to flourish and pass on the genes that helped them thrive. Species alter and deviates as a result of this process.
Natural selection, Darwin proposed, is a mechanism for evolution in which heritable traits that help support life reproduce and survive become more prevalent in a population over time.
Darwin and a scholarly colleague, Alfred Russel Wallace, posited that evolution occurs as a result of a phenomenon known as natural selection. According to natural selection theory, organisms generate more offspring than can survive in their environment.
Thus, the answer is natural selection.
For more details regarding natural selection, visit:
https://brainly.com/question/9830102
#SPJ5
List some characteristics of each type of seismic wave. Include what type of material (solids, liquids, or both) each can travel through. Primary wave: Secondary wave: Love wave: Rayleigh wave:
Answer:
The primary wave or the P wave is the fastest kind of seismic wave. These waves can travel through the fluids like the liquid or the water layers of the Earth, and solids rocks. It pulls and pushes the rock it moves through similar to the sound waves that pull and pushes the air. These waves are also called compressional waves, due to the pulling and pushing they do.
The secondary wave is also known as the S wave is slower in comparison to a P wave, and possess the tendency to move through the solid rock, however, not through any kind of liquid medium. The characteristic of the S wave helped seismologists to conclude that the outer core of the Earth is a liquid. The S waves help in moving the particles of rock side to side perpendicular to the direction of the wave or up and down.
The Love wave and Rayleigh waves are the two kinds of surface waves. These waves possess lower frequency in comparison to the P and S waves. Of the surface waves, the Love waves are the fastest surface wave and move the ground from side to side.
On the other hand, a Rayleigh wave rolls around the ground similar to the rolling of the waves across an ocean or a lake. Both these waves only travel through a solid medium.
Ari drew a diagram to show organisms in an ecosystem. What did Ari draw?
Answer:
food web
Explanation:
Food web is an interconnection and assimilation of different good chains. Many food chains are interlinked a hence a food web is created. This represents what is eaten by which organism. The diagram that Ari had drawn is a diagram of a food chain. The grass is the primary source of food in the food web. Rabbit, Mouse, and grasshopper are the animals that eat the grass. The grasshopper is eaten by a shrew and a mouse. The rabbit and shrew are then eaten by the fox. A mouse is eaten by a snake and a fox. This is the diagrammatic representation of a food web.
Answer:
food web
Explanation: