a flood kills most of a population of ants that lives near a river. after the flood, the ant population increases, but its allele frequencies are different. what does this situation represent

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.

If animal agriculture was eliminated, how much grain would become available for human consumption?