Why is carbonate important for marine life? How does lowering the pH in the ocean affect marine life?

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.

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

The cluster of developing cells from conception until birth is called an