A because the nervous system gives you sign and how you should be felling so it makes y perspire after you felt as if u were in danger
ATP<span> is the primary energy-carrying molecule in the </span>cell<span>. It acts as a rechargeable battery for cellular processes by carrying energy in the terminal bond of the phosphate molecule and returning to recapture energy when it is used. Without </span>ATP<span>, the </span>cell<span> would die.</span>
Answer:
Your answer is organ systems.
