Individuals in a species have genetic variation that can be passed on to their offspring (Use evidence and examples to support this claim)

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.

The cluster of developing cells from conception until birth is called an

Why do mountaineers become breathless as they reach high altitudes