I believe that the answer would be D., Water.
Water gives you alot of energy, believe it or not. If you
were not to drink water for days, you will feel very lazy
and down.
Hope this helps!
Centers for Disease Control and Prevention
make the ability, knowledge, and tools that people and communities need to
protect their health - through health awareness, prevention of disease, injury
and disability, and preparedness for new threats. This is also to prosper its
mission by collaborating with partners throughout the nation and the world to
monitor health, detect and investigate health problems.
The answer to this question would be: <span>B. Receptor site
The receptor site of a neurotransmitter often only receives a specific kind of transmitter. That was because the receptor has a unique 3D structure, so different transmitter wouldn't fit into the receptor. That was similar to lock and key principles.</span>
Future differences I think
