The selective breeding of wild mustard has and produced at least four other vegetable crops.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

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.

Dna replication or repair occurs in a cell in all of thw following situations except when