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vekshin1
3 years ago
14

How might Earth be different if the ozone layer did not exist

Biology
1 answer:
svp [43]3 years ago
4 0

Life would not exist. The ozone layer is keeping all the gasses from escaping into space. So, without the ozone layer, there would be no oxygen for animals or carbon dioxide for plants. The ozone layer also reflects space radiation and harmful UV rays back into space, preventing them getting into the Earth's atmosphere.

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How are the results of genetic drift similar to the results of gene flow?
Fynjy0 [20]
The answer is Both result in a change in allele frequencies in the affected population

Genetic drift is a change in the frequency of alleles in a population as a result of random sampling of organisms. I<span>magine you have two different alleles in the population responsible for red and white color of a flower. Their allele frequencies are 0.2 for white flowers and 0.8 for red flowers. After some change in the environment, only white flowers survive. They will reproduce, and in the population, there will be only white flowers. The population for these flowers will increase from 0.2 to 1.
Speaking of gene flow, it is not as dramatic and drastic as genetic drift, but still, it includes a transfer of alleles from one population to another, so there is expected a change in allele frequency.</span>

5 0
4 years ago
What type of change is boiling water? why
Rasek [7]
Boiling water is a physical change. This is because the water that is being changed into a gas, and can be changed back. Bohr proposed a theory that helped make the blueprint for the atomic model. Gold is a soft but heavy metal, and reflects light with a green/blue hue. Gold is a shiny yellow to canary yellow in colour, and is often confused with pyrite, or 'fool's gold'. The particles in a solid vibrate in place, and are very close together. When one atom of carbon and two of oxygen meet, the make a bond that in turn creates CO2 or carbon dioxide. I hope I helped. :)
4 0
4 years ago
A population of pine trees with long needles is separated from a population of pine trees with short needles by a large valley.
mixas84 [53]
The correct answer is:  [D]:
_____________________________________________________________
  " <span>The two populations will evolve separately and become their own species. "
_____________________________________________________________</span>
7 0
3 years ago
Read 2 more answers
HELP ME! I AM BEGGING U!​
dolphi86 [110]

Answer:

I believe it is B

Explanation:

3 0
3 years ago
Explain how the body can shift the flow of blood from one organ system to another
Len [333]

Answer: The redirection of blood flow from one organ system to another is an outcome of coordinated vasomotion – constriction of precapillary sphincters and capillary blood vessels in tissues where blood flow is discouraged, and dilation in tissues where blood flow is promoted.

Explanation:

5 0
3 years ago
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