Analyze how different concentrations of solutes in a solution can affect organism's cells

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.

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.