Upon identifying an antigen in the bloodstream, b cells launch a chemical attack by producing antigens specific to the antibody. this is an example of immunity.

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere

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.

Acommon kind of mechanical weathering is called