All of them Plays an equal and important role to support life on Earth..
Fractional Crystallization
Explanation:
The First wave of Immigration to the U.S. were mostly White, Protestant Europeans from Germany and England. The second wave of Immigration to the U.S. consisted of immigrants fleeing Eastern European and Mediterranean countries because of either religious reasons or economic reasons, this group of immigrants faced discrimination in the U.S. The third wave of immigration to the U.S. mainly consists of immigrants from Latin America and Eastern Asia. Immigration from Latin America has accelerated in the past 40 years due to decades of corruption and war that has been caused by American intervention in the region during the 70s and 80s.
Answer:
B
Explanation:
Think of it as the North and south Pole one is on each side
