Step 2: Research coal as a source of energy. a) Research and note the following information about coal.
i. Benefits
ii. Limitations
iii. Cost of generating electricity using coal
iv. Impact on the environment
v. Impact on human health

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.