1 Select the correct answer. What happens to the velocity of a sound wave in air if the temperature of the air increases? A. velocity increases

B. velocity does not change O

C. velocity decreases

D. velocity drops to zero Next Reset

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.

Cells destroy body cells infected by a virus or bacteria.

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material