Ageographer who studies how people learn to live with nature's challenges, like cold weather, most often studies which of the six essential elements of geography?

the answer is A

Explanation:

Just took the test

the answer is b. apsidal precession

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.