<span>The mechanism that affected the gene pool of the immigrants that entered the United States through Ellis Island from 1892 to 1954 is B. gene flow. Gene flow is the transfer of genes or alleles from one population to another. The migration of millions of individuals from countries across the Atlantic Ocean to the United States is responsible for the changes in the gene pool of the immigrants.</span>
Answer:
At the 5th trophic level would be <em>quaternary</em> consumers that eat <em>tertiary </em>consumers.
Explanation:
Producers include photosynthetic organisms such as plants and algae. They are eaten by primary consumers (herbivores). Secondary consumers include omnivores and predators that prey on primary consumers. Tertiary consumers include omnivores and predators that prey on primary and secondary consumers. Quaternary consumers include omnivores and predators that prey on all lower trophic levels.
