How does the human brain receive messages and send signals to the body about what's happening?

heres how

Explanation:

Neurons communicate with each other by sending chemical and electrical signals. Each neuron is connected with other neurons across tiny junctions called “synapses.” Impulses rush along tiny fibers, like electrical wires, from one neuron to the next. Electrical impulses travel through neurons.

as many times as you want

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.