The answer is C. You don't really need the others because they don't impact your physical health. If you think about it that way!!
Track can be good for your health because it keeps you in shape and movies so when you have to walk for a long amount of time it will be easier on you
Answer:
State of excitation or stimulation will keep on progressing.
Explanation:
IF dopaine is a type of neurotransmitter that is released from the nerve ending upon excitation and stimulation.
This neurotransmitter need to be removed when the work is done else the state of excitation or stimulation will keep on progressing or will be in continuous state of excitation thereby causing neural harm.
HIV crossed from chimps to humans in the 1920's in what is now the Democratic Republic of Congo. This was probably as a result of chimps carrying the Simian Immunodeficiency Virus (SIV), a virus closely related to HIV, being hunted and eaten by people living in the area.