A

al s3x the riskiest s3xual activity for HIV transmission. (Haha sorry for the pi and 3s it won't let me submit some of those words)
The chemicals, neurotransmitters are released to carry a nerve impulse which is an electric signal transmitted by the nervous system. This impulse transmitted from one neuron to another. Examples of neurotransmitters are serotonin in which scientists thinks that a low level of this is one of the causes of depression.
Because the cells always diverted when break down
Answer:
The pharynx, or what we know as the "throat," is a dual duty body part. It has the job of both swallowing/ moving food to the esophagus. It is also the channel that allows air from your nasal/ oral cavities to flow down to your larynx, or voice box.
Hope this helps!
Answer:
There are 29 skull bones in human body.