Describe the role of lymphocytes, antibodies, and antigens in the body's immune system

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.

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Explain how mendel kept his pea plant from self pollination