Why does your stomach hurt when you havent eaten then you do?

Well you have inside your stomach acids when you don't eat those acids cause damage , those acids break down the food and when there's no food to break down , they simply cause damage , that's why your stomach hurts.

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.

No because the eaeht is on a 23.5 degree axis tilt and so when it is winter the northern hemisphere is pointing away from the sun and the soutubern hemisphere is pointing toward the sun