Answer:
When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. ... Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.
A. Neuron
The neurons are cells that process and transmits information through electrical and chemical signals.
-Sasha
when water builds up in a cloud and its cold out instead of rain it snows