Which situation would encourage competition? Which situation would not encourage competition?
A wet, rainy season results in flooded caverns foxes normally use as shelters.

A long, wet season results in additional earthworms in a robin habitat.

A long dry season results in a decrease in pond algae in a fish habitat.

The amount of vegetation decreases due to a drought in a rabbit habitat.

D

Explanation:

Competition occurs between organisms living in the same habitat, rely on the same resources for survival and the resource is in short supply.

So, from the given options competition will occur in rabbit habitat that have short supply of  vegetation due to due to a drought. Now rabbit will compete with each other for limited food supply for their survival.

Hence, the correct answer is  "D."

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a