What do periods make up?

epochs

eras

eons

none of the above

Eras

Explanation:

In the geological time scale, eons are divided into various eras and eras are divided into various periods. Periods are further divided into many epochs. Hence, many periods together make an era.

Example: Cretaceous, Jurassic and Triassic periods together make the Mesozoic era. Likewise, the existing period "Quaternary" is the part of Cenozoic era.

i am positive it is c. condensing but i may be wrong

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