They're called endorphins!
Answer:
2 or 3
Explanation:
I believe it's 3, I could be wrong though.
•apoptosis-the death of cells which occurs as a normal and controlled part of an organism's growth or DEVELOPMENT.
ANSWER: d. Development
Antibiotics are ineffective against viruses because viruses do not have cells. Viruses are infectious agents that live within the cells of other living things. Antibiotics work by breaking down the cell walls of bacteria or interfering with the bacteria's ability to repair its cell's DNA, according to How Stuff Works.
The answer is c... good luck