Answer:
True
Explanation:
This is because the Earths ionisphere was distrubed which makes radio communications.
Answer:
B.)
Explanation:
An Aquifer is an underground formation containing groundwater
Answer:
A. At the top of the rock stack.
Explanation:
An energy level of a certain atom is further divided into the orbitals. There are four (4) orbitals. These are the s orbitals, p orbitals, d orbitals, and f orbitals. They are already arranged above as to how they are to be filled. The number of electrons that each can hold are as follows:
s orbitals = 2 electrons
p orbitals = 6 electrons
d orbitals = 10 electrons
f orbitals = 14 electrons