Question 2 (1 point) a is a measure of energy in food. gram carbohydrate calorie none of the above

the answer is d (apex) good luck : ))

b. the carbon cycle ensures living things have a source of hydrogen

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.