Question

1. wolves are at the top of the food chain. in the 1970s wolves all but disappeared from yellowstone. which of the following was a likely effect of the wolves disappearance? the number of decomposers decreased. (blue) more herbivores survived. (aqua green) the biodiversity of plants increased. (light blue)

Explanation:

Wolves are top predators. Their disappearance would reduce predation on herbivores, so more herbivores would survive. Decomposers depend on dead organic matter; without a direct link to wolf disappearance reducing decomposers, this is less likely. Herbivore overgrazing would likely decrease plant biodiversity, so the "biodiversity of plants increased" is incorrect. So the likely effect is more herbivores surviving.

Answer:

More herbivores survived. (aqua green)