Answer:true, false, true, true
Explanation:
Endorphins are brain chemicals
known as neurotransmitters which are released when the body feels a certain
amount of stress and pain. Endorphins alter the communication of pain in the
body by interacting with the opiate receptors and blocking the synapse so that signals
cannot be sent to the brain in order to reduce an individual perception of pain.
Sterile water is most often used
Glaciers cover 10% of land surfaces.
Hope this helps
I think yes but im just answering to ask a question sorry
