Which two animals are able to generate internal heat to maintain their body temperature in a cold environment? (select all the are right parrot snake frog dog crocodile

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.

The relationship between intron and exon

Which level of taxonomy has the fewest organisms?