It put stress on the nervous system.
There are so many examples for that in different areas, like alkyl silane experiment carried out in our lab recently.
Here's one link: http://www.alfa-chemistry.com/products/alkyl-silane-29.htm
Increases because there's more food for the carnivores, as a result, the gradually the herbivores will decrease as the reach to a point they are no longer able to feed all the predators
C. Arachnida.
hope it's correct.
I believe the answers are A. C. D.