Which of the following processes releases energy to be used by a cell?

a. a phosphate group is added to atp to form adp.

b. a phosphate group is removed from adp to form atp

c. a phosphate group is added to adp to form atp

d. a phosphate group is removed from atp to form adp

D

Explanation:

All living organisms require energy to perform their various life functions. They derive this energy by breaking down their food in a metabolic reaction called CELLULAR RESPIRATION. Respiration converts the energy stored in food molecules to a form usable by the cells. This form is called Adenosine triphosphate (ATP).

ATP is an energy carrying molecule used by cells to perform certain cellular functions. The energy in the ATP molecule is stored by adding a phosphate group to Adenosine diphosphate (ADP) to produce ATP, while the energy is released when the phosphate group is removed from ATP to form ADP.

chemical weathering

explanation:

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a