When soil first forms over bare rock, what is it made of?

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

Nucleic acid certain protein cell membranes certain carbohydrates

Any sound above what db can cause hearing loss in human beings