An elderly woman finds that her back hurts almost all the time her doctor tells her it’s because she has osteoporosis why am I a disease that causes her bones to thin and make her back hurt

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.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air