Which part of the nervous system is the first to work when joshue feels a raindrop fall on his arm?

Sensory neuron

Explanation:

Through the sensory neurons the individual captures stimuli and information from the surrounding environment and from his own body. The stimuli are transmitted as electrical impulses to the central nervous system. In turn, the central nervous system processes information, translating it into sensations and generating responses. This is how we see what is around us, feel when someone pinches us, perceive raindrops falling on our arm, taste the food, among many other sensations.

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.