A trait that is helpful to a species will become more common in that species over time. This is called . Group of answer choices

A. genetic variation

B. transition

C. overproduction

D. selection

Actinobacteria sp. are fermenting organisms (which do you use oxygen to breathe) referred to as chemoorganohetereotrophs this means they break down organic material and convert it to inorganic material. which part of the carbon cycle does this describe