in any ecosystem, land-based and aquatic, matter, in the form of atoms and molecules, is cycled among all organisms. organisms within every food web, have specific roles in continuing the cycle of nutrients.
in any food web, the organisms that are responsible for converting raw energy into usable chemical energy are collectively called while organisms that recycle the nutrients trapped in dead organisms are collectively called
a) producers; consumers.
b) producers; decomposers.
c) heterotrophs; consumers.
d) heterotrophs; autotrophs.

B) producers; decomposers

Explanation:

Decomposers are the only organisms that recycle energy In dead matter. Producers take raw energy from the sun and convert it into chemical energy so that it can be used to make their food.

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

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%