I believe ATP is the compound that does most of the work to carry out cell processes.
Xylem and phloem are the two tissues that are found within a vein.
Xylem carries water, and phloem carries food, or glucose.
It would probably be true
Answer:
In the muscles during exercise.
Explanation:
During exercise, the body uses up all its oxygen. Therefore, the muscles use anaerobic respiration (making energy w/o oxygen) to function. Lactic acid is produced as a by-product, which makes the muscles sting.