Where do hurricanes originate (start at)? B. Warm tropical oceans
C. Cold polar regions
D. Warm mountain tops
A. Dry land

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

According to the cladogram, which organisms have roundworms as a common ancestor?

The diagram shows a chicken embryo and a human embryo