When does a cell switch from cellular respiration to fermentation?

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Pls quickly! which of the following is true about the behavior of an organism? a. the behavior of an organism is influenced by both its heredity and it’s environment. b. the behavior of an organism is influenced only by the treats it inherits from its parents. c. the behavior of an organism is influenced only by the environment in which it lives in. d. the behavior of an organism is not influenced by either it’s heredity or its environment.