What would happen to the size of the herbivore population if the producer population decreased?

If the producer population decreased, the size of the hervibores population will diminish.

Explanation:

Producer population refers to autotrophic organisms (plants for example). These organisms are the nutrition source for primary consumers (like hervibores). So if the nutrition source decreased, the population size of hervibores will decreased too.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

the animal that would be cutest if scaled down to the size of a cat? elephant