The second one is A, amount of time
Answer:
I believe that the answer is A, Lowering the population to protect resources and the environment.
The answer is - Sunspots.
Sunspots are dark in appearance, but only on a visible light, and this is due to the fact that they are much cooler than the surrounding areas, but that doesn't mean by any means that the sunspots are cool, on contrary, they are very hot too. Sunspots actually are storms that appear in the lower atmosphere of the sun.
Hi :)
environmental refugees and climate change are similar because the refugees could move because of climate change