What is the chemical signal that diffuses across the synapse from a sending neuron to a receiving neuron called?

A neurotransmitter

Common types of NT:

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?