Because it would require more energy to create elements with more protons
The answer is B. Rhine.
Hope that helped you!
Answer:
Migration is the movement of individual organisms into, or out of, a population. ... Immigration is the movement of individuals into a population from other areas. This increases the population size and growth rate. Emigration is the movement of individuals out of a population.
Explanation:
I'm 99% sure the answer you're looking for is increased pollution.