Two species of a plant genus ipomea share a common niche and reproductive pattern but are still unable to hybridize because they have structurally different flowers. what kind of reproductive isolation is observed in these two species?

a.) mechanical
b.) temporal
c.) behavioral

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.

Solutions to environmental problems in europe must

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell