Biogechemical cycles depend mostly on bacteria and fungi for decomposition and the recycling of elements.
Both of them produce mucus.
Baboons, sparrows, and human beings are considered both primary and higher order consumers because they all eat plants and meat.
Primary consumers feed on producers/ plants. Then secondary consumers feed on primary consumers.
Genetic variation is advantageous because it enables some individuals and, therefore, a population, to survive despite a changing environment.
