Answer:
Unreasonable explanations and blurry proof. Also if the person who made a theroy for example, and they are brand new, and they didn't use much resources and had a thought.
Explanation:
Scientests disagree about several things. Thus they conduct expirements, if it fails, they disagree. If it suceeds they agree.
Someone please do this for me.
 ___ dating uses radioactive elements to _____ matter such as rocks and ___. As the radioactive elements _____, they turn into other elements. Scientist then use the ratio of the two elements to determine how old something is.
a. fossils
b. know
c. chemical
d. disintegrate
e. integrate
f. radioactive
g. date
Answer:
Radioactive dating uses radioactive elements to date matter such as rocks and fossils. As the radioactive elements disintegrate, they turn into other elements. Scientist then use the ratio of the two elements to determine how old something is.
Explanation:
The fill-in-the-blanks with the help of given appropriate words is as follows:
Radioactive dating uses radioactive elements to date matter such as rocks and fossils. As the radioactive elements disintegrate, they turn into other elements. Scientists then use the ratio of the two elements to determine how old something is.What is Radioactive Dating?Radioactive Dating may be defined as a methodology that is used to find the dating of various rocks and minerals including fossils with the help of radioactive isotopes. This method is significantly useful for igneous and metamorphic rocks.
This method is used to determine the age of earth materials or objects of organic origin on the basis of a given radioactive material that it contains.
Therefore, the fill-in-the-blanks with the help of given appropriate words is well mentioned above.
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In adult animals, ___________ are a source of undifferentiated cells that can divide to produce cells that can specialize.
Answer:
Stem Cells
Explanation:
-
What happens to animals born with a change in species numbers ?
Answer:
If one animal's population increases, the population of animals that eat that animal might also increase. Increases in population aren't always beneficial.
Explanation:
Sometimes a population will grow too large for the environment to support. Other changes in limiting factors can cause a population to decrease.
source: NHPBS
Humans belong, at least partially, to a category of ____________. Whether we mean to or not, we change natural habitats and ecosystems at much faster rates than other species can adapt.
Humans belong to a category of intelligent primates.
What are primates?Primates refers to a group of animals that have the ability of high levels of cognition. These group of animals can manufacture their own tools and use them to get foods and for social displays. Some have several strategies to hunt their prey , they have greater influence and rank; they are status conscious. They can receive and also manipulate. They recognise kin.
Therefore, Humans belong to a category of intelligent primates.
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Anaphylaxis is an overactive immune response to a perceived pathogen.
True or False
ONLY ANSWER IF YOU KNOW AND WHY
Answer:
True
Explanation:
Anaphylaxis is an acute allergic reaction to an antigen (e.g. a bee sting) to which the body has become hypersensitive.
Common symptoms include:
Skin reactions such as itching and hivesFlushed and pale SkinLower blood pressureDifficulty breathingChokingWeak and rapid pulse rateVomitingNauseaDizziness or faintingMark brainliest please
Answer:
True
Explanation:
This happens when our immune system overreacts to a foreign substance so much that it harms you.
If the grass contains 100,000 kcal of energy, how much energy will a fox obtain from eating a bird? 10,000 kcal 1,000 kcal 100 kcal 10 kcal
If the grass contains 100,000 kcal of energy, the energy a fox will obtain from eating a bird is 1,000 kcal.
What is Calorie?This is defined as a unit of energy and it decreases as it moves up the food web in the ecosystem.
The organisms only derive 10 percent of the energy when the feed on others. In this case, the grass has 100,000 kcal of energy which when eaten by the bird will be 10 percent which is 10,000 kcal. When the fox eats the bird it becomes 1,000 kcal.
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Where does most regular lightning occur?
A. The stratosphere
B. The troposphere
C. The Mesosophere
when completing an angioplasty what implant can be used to hold the vessel in the open position after the balloon angioplasty. what is the potential complication
Compare between simple fruit and multiple fruit in two points. How can fruit play an important role for continuity of generation in plant life?
Answer:
Simple Fruits: fruit derived from one ovary. Aggregate Fruits: fruits derived from multiple ovaries of a single flower. Multiple Fruits: Fruits from many flowers packed together, such as pineapple, blackberry, and raspberry.
the fruit protects the seeds and helps to spread them. Many fruits attract small animals. After eating the fruit, the seeds of that particular fruit is passed out together with the animal droppings. Then the seed will grow into a plant and the cycle repeats it self all over again.
Which characteristic do birds and mammals have in common? question 17 options: both have fur or hair. both are endothermic vertebrates. both have three-chambered heart. both are vertebrates that produce milk.
Answer:
I think the answer is both are endothermic vertebrates.
Endothermic vertebrates are ones which can produce their own heat and have a spine (backbone).
so.. the answer is endothermic vertebrates.
Hope it helps.
A population of endangered sea turtles currently has 500 individuals. The intrinsic growth rate for the population is 0.04. How long will it take to reach 1000 individuals
The intrinsic growth rate for the population is 0.04. How long will it take to reach 1000 individuals is 17 years.
What is population?
The recent estimates display us that there are almost 6.five million sea turtles left withinside the wild with very special numbers for every species, e.g. populace estimates for the significantly endangered hawksbill turtle variety from 83,000 to probably simplest 57,000 people left worldwide.
N= N0e(rt) N= new populationN0= Original populationr= charge of increaset= time required1000= 500 e(0.04t)1000/500 = e(0.04t)2 = e(0.04t)ln 2 = 0.04 tt = ln 2/0.04t = 0.693/0.04 = 17.32 years.Read more about intrinsic growth rate:
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True or False: Food webs and the ecosystems that support them look different in different parts of the world depending on their habitat conditions.
Answer:
true
Explanation:
hope this helps:)
Food webs and the ecosystems that support them look different in different parts of the world depending on their habitat conditions. It is a correct statement.
Since the species present depend on the location, food webs depend on location.
What is the food web?A food web is a wider version of a food chain. It connects numerous food chains into inter-organism energy interactions.
What is an ecosystem?
All species and the abiotic environment with which they interact make up an ecosystem. Nutrient cycles and energy flows bind these biotic and abiotic components together to form an ecosystem.
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Help please please thanks
Heat-loss mechanisms do not include ________. A) reducing activity B) the evaporation of sweat C) behavior measures such as wearing light, loose clothing D) vasoconstriction of peripheral blood vessels
Heat-loss mechanisms does not include behavior measures such as wearing light, loose clothing.
What is Heat loss?These are the processes which involves heat being lost from a body to the surroundings.
Wearing tight and not light, loose clothing will promote heat loss which is why option C was chosen as the most appropriate choice.
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Helppp with this pleaseeeeeeeee
Most energy in an ecosystem originally comes from _____.
the soil
plants
the Sun
primary consumers
Answer:
The Sun
Explanation:
-
According to the July 1985 New York Times article, what is to blame for the decline in the clamming industry?
Answer:
"Overfishing and pollution have been blamed for the clam shortage, and scientists believe the harvest must be limited before the stock becomes exhausted."
Explanation:
Hope this helps C:
~Chiena
Which statement about a major hurricane is an inference?
A. The wind speed was 200 km/hr
B. The central air pressure was 946.0 mb
C. A rain gauge records three inches of rain in less than one hour
D. Damage from the storm is expected to be extensive
Answer:
Its D
Explanation:
How is control of a disease such as bubonic plague complicated by the fact that it spreads across multiple animal species?
Answer:
Bubonic plague outbreaks are controlled by pest control and modern sanitation techniques. This disease uses fleas commonly found on rats as a vector to jump from animals to humans. The mortality rate hits its peak during the hot and humid months of June, July, and August.
Explanation:
Answer:
The fact that a disease spreads through multiple animal species creates problems in its eradication since it is necessary to look for more than one strategy for disease control, additionally this causes the disease to expand at a more dizzying pace.This situation also causes the disease to expand geographically and increases the likelihood of infection in humans.
Explanation:
A summary of some scientific steps is outlined below.
1. Ask scientific questions.
2. Make observations with the senses.
3. Record data in a table or graph
4. Notice trends in the data.
5. Publish or present the findings.
cess is shown here. If a scientist will make an inference, between which two steps would "making an inference" most likely occur?
en 1 and 2
en 2 and 3
en 3 and 4
een 4 and 5
Answer:
en 1 and 2
Explanation:
In the summer, snowfall decreases, and melting increases, which results in the outflow being melt.water, thus leading to an increase in ablation causing an overall __________ bud.get and glacier shrinkage.
Answer:
Negative
Explanation:
5. The substance being dissolved in a solution. A. sands B. solute C. solvent D. alloy
What is the substance being dissolved in a solution?
ANSWERThe correct answer is letter B. solute
WHY?Solute is known as the substance that is being mixed with a solvent (usually water) since water is considered as universal solvent. Solute is the dissolved substance in a particular solution, it can be completely different things.
WHAT IS SOLVENT?Solvent on the other hand is the substance where solute is being dissolved, most of the time it is a liquid or specifically water, and together they produce solution.
One perfect example is shown in the provided image.
Describe how a lake might become a forest in a period of 100 years.
Lake might become a forest in a period of 100 years by the process of hydrosere.
What is hydrosere?
Hydrosere is defined as the primary succession that develops in aquatic atmospheres such as lakes and ponds.
There are different stages in the succession from lake to pond. such as the initial stage of succession is phytoplankton, and zooplanktons which pioneer colonizers.
Rooted submerged stage is another stage which suitable for the growth of rooted hydrophytes like Elodea, Myriophyllum, etc.
Floating stage is the third stage where submerged and floating plants grow intermingled but after soon the submerged plants are replaced completely by the dead plants deposits at the bottom.
Reed-swamp stage is 4th stage where the plants of this community are rooted but most parts of plant shoots remain exposed to air.
Sedge meadow stage is 5th stage where further decrease in water level changes the nature of substratum and grasses grows on the area.
Woodland stage is 6th stage where some shrubs and later medium sized trees form open vegetation or woodland tress grows.
Forest stage is the final stage or climax community stage which is invaded by several trees which further develop into forest.
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What effect does a rapidly changing environment have on the natural selection of organisms in a species?
A. Organisms will decrease their reproductive rate.
B. Species with little genetic diversity will adapt most quickly.
O c. Species that cannot adapt quickly enough may become extinct.
• D. Organisms will increase their rates of mutation to adapt to change.
Rapidly changing the environment of organisms can result in them going extinct if they refuse to adapt quickly enough.
Natural selection and the environmentOrganisms need to adapt to new environments.
Thus, changing the environments of species rapidly means that the species either catch up by adapting as rapidly or risk going extinct.
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solid waste is produced more in city than rural areas give reason
Answer:
there are more people per household and in general
Explanation:
In which part of the brain is hunger and thirst regulated?.
Answer:
The hypothalamus
Explanation:
The hypothalamus regulates functions like thirst, appetite, and sleep patterns. It also regulates the release of hormones from the pituitary gland.
In a population of 100 individuals there are 40 individuals with genotype AA, 40 with genotype Aa, and 20 with genotype aa. What is the frequency of the a allele
Answer:In a population of 100 individuals there are 40 individuals with genotype AA, 40 with genotype Aa, and 20 with genotype aa
Explanation:
Which would make the best pioneer species during primary succession?.
Answer:
mosses or lichens, algae fungi
this organisms are knows as pioneer species because they are the first species present.
The Punnett square shows the inheritance of flower color in snapdragons in the F, generation. What is the expected ratio of red flowers to pink
flowers to white flowers in the F2 generation?
Answer:
the answer will be all pink