40 points
which of these compounds are a source of nitrogen for animals
a) nitrates
b0 proteins
c) nitrites
d) ammonia

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