The aerobic system of energy production uses glycogen, but primarily as its energy source?

The aerobic system of energy production uses glycogen, but primarily glucose  as its energy source.

Glucose is taken in by the cell and broken into pyruvate in the process of glycolysis, the first step in aerobic cell respiration. It takes place in the cell cytoplasm.

Pyruvate is then used in the Krebs cycle in the cell mitochondria in the second step of respiration which produces high energy electron carriers. These high energy electron carries such as NADP are then employed in the electron transport chain, the last step of the respiration process, where a large number of ATP molecules is produced.

By the time the process of aerobic respiration ends, 36 to 38 molecules of ATP are produced from one single molecule of glucose.

not only is it colder, it also becomes darker, less salty, and more dense.

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