Question

two years of dry weather are followed by two wet years, causing the grass population to rise. how will the increase in grass affect the animal populations? grass (tons) 8000 7000 6000 5000 4000 3000 2000 1000 0 0 2 4 6 8 10 12 14 16 18 year only the fox population will increase the populations of prairie dogs, ferrets and foxes will all increase only the prairie dog population will increase only the ferret population will increase.

Explanation:

In an ecosystem, grass is a primary producer. An increase in grass means more food availability for herbivores like prairie - dogs. With more prairie - dogs, there is more food for their predators like ferrets and foxes. So, the populations of prairie dogs, ferrets and foxes will all increase as they are part of a food - web where grass is a foundational resource.

Answer:

The populations of prairie dogs, ferrets and foxes will all increase