If I were you I would choose muscles it seems right to me although I might be wrong. Hope this helped some! ;)
In active transport, materials move from an area of high concentration to an area of lower concentration (goes down the concentration gradient) and it requires or uses energy in the form of ATP (adenosine triphosphate)
Answer:
Energy comes from different sources such as oil, coal the wind and the sun.
Answer:
D. decreased supply of energy
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Answer: B). CO₂
Cellular respiration is the process of conversion of food energy (glucose) into chemical energy (ATP). Oxygen and glucose are the reactants in the chemical reaction of this process and carbon dioxide and water are the products.
