Answer:
A. ice, ground water, lakes, and water vapor
Explanation:
A change in dna (deoxyribonucleic acid) in an organism that results in a new trait is known as a mutation. A mutation usually takes many generations to be visible, it is passed through the next generation and they inherit the same DNA and they might be a small change in that same DNA and then that genetic information is passed to the next generation and so on, after being passed and altered for a long time the results will be visible.
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.
I wanna say it’s b but if not I’m so sorry !
81.89% of the Middle East has oil from the OPEC oil company, however I couldn't find out other companies or just the source of oil as a whole.