It takes 70 gallons to fill a bathtub, 25 gallons for a 5 minute shower, 8 gallons when you run
the tap to brush your teeth, and 200 gallons
for a leaky toilet. Which one of these wastes
the most water per day in an average sized
home?

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.

Onsider the paragraph above. what is one chemical property of water? a) water is a polar molecule. b) water is the universal solvent. c) water reacts with group 1 metals. d) water has a high specific heat capacity.

20 the compound al(nh3)2 has atoms of nitrogen.