Describe the difference in pressure agaisnt your cheeks when they are full of air versus when its released

What are two reasons for why a species might disappear from the fossil record?

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.

What molecules does hemoglobin decay into over time