In the carbon cycle, carbon from the nonliving environment becomes a part of living organisms through

A. photosynthesis.

B. cellular respiration.

C. transpiration

D. absorption

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

layer 3 is younger than layer 6.