Please help asap! It is due in 20 minutes, and I'm just really confused.. Thank you! The 2 questions are in the pictures below.

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

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

Which term describes a normal value for something in the body? a. homeostasis b. set point c. feedback loop d. integration center