1. What is the term that describes the
amount of water vapor in the air?

Hello!

The term that describes the amount of water vapor in the air is absolute humidity.

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