How does clearcutting damage an area's ecological integrity?

Which best describes the scientific process

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

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