What are two reasons the digital signal is a more reliable way to copy sound recordings than the analog signal?
A. The digital signal includes a full range of values.
B. The digital signal uses a limited number of values.
C. The digital signal is less affected by noise.
D. The digital signal is more complicated.

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.

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent  

Drag each label to the correct location on the chart. match the function to the type of tissue