Rivers are important because if we only had salty water, we're would we get the water we drink without wasting a lot of electricity fertilizing it?
Constituents are people represented by a particular member of Congress.
The answer is C, they run independent campaigns in support of candidates.
Answer:
Theory
Explanation:
A theory is an evidenced based explanation about how a natural world situation, event or phenomenon occurs / act the way it does. A theory could be backed by a mathematical formula. A good example of such theory is Einstein's Theory of Special Relativity which has the mathematical formula
E= mc2.
A They joined the U.S Army