Jackie bought a large concrete flower container for her yard. The salesperson recommended that Jackie add a waterproof liner or sealer/paint before she uses it. Why would that be a good recommendation?

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.

Explain why the plants cortex would serve as the best food source for animals

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from