An electric current is trying to move through an atom. how do protons and electrons impact the movement of electricity?

Is it considered muscle s ennervation if sympathetic fibers innervate the vessels within the muscle?

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

In the practice of science, this type of reasoning is used to develop explanations.