Answer:
you would use the fight or flight response your nervous system would help
Explanation:
B I believe would be your answer
Atom, cell, tissue, organ
Answer:
Law of conservation
Explanation:
Energy cannot be created or destroyed
The human brain consumes up to 20% of the energy used the entire human body which is any other single organ. the brain represents inly 2%of the body wheight yet it recieves 15% of the cardiac output and 20% of the total body oxygen consumption.