Diagrams can use arrows to show the direction in which thermal energy flows.
Which diagram best shows the transfer of thermal energy that takes place
when an instant cold pack cools its surroundings?

i just got this problem. it's 90.3

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.