Answer:
During the first phase, the population growth rate rises as the death rate declines while the birth rate remains high. In the second phase, the growth rate declines (but remains positive) due to a decline in the birth rate.
Explanation:
The correct answer is<span> a. release of contaminants
If you produce hydroelectric energy, you disrupt the water flow by building dams and power-plants, which also disrupts the aquatic wildlife that inhabits those areas. This also increases riverbed erosion because the water is accumulated and reaches further into the shore. </span>
I believe the answer is C.