Answer:
The immune system is a complex network of cells and proteins that defends the body against infection. The immune system keeps a record of every germ (microbe) it has ever defeated so it can recognise and destroy the microbe quickly if it enters the body again.
Explanation:
Answer: chemical and physical I think I havent done this question in a while. But I'm pretty sure it mostly chemical
Explanation:
A. Muscular
Hope this helps!! Good luck :)
Answer: maintain a healthy weight, sleep well, and be physical
Explanation:
