<span>- genetic drift
</span>Which mechanism affected the gene pool of the immigrants that entered the United States through Ellis Island?
NOT:
- gene flow
- gene mutation
<span>- natural selection</span>
Answer:
you end up with diabetes so.. yeah
Explanation:
Yes , i would help you but the photo isn't clear . :(
The answer is photosynthesis.
<span>Photosynthesis
occurs in the leaves of green plants. During photosynthesis, carbon
dioxide and water are converted into using the energy of
sunlight to glucose and oxygen. After great evolution of plants, the photosynthetic rate was increased. More plants mean more oxygen produced in the process of photosynthesis. Thus, photosynthesis </span><span> is most responsible for the increase in early Earth’s atmospheric oxygen levels.</span>
