When state law and federal law conflict, federal law displaces, or preempts, state law, due to the Supremacy Clause of the Constitution. ... Preemption applies regardless of whether the conflicting laws come from legislatures, courts, administrative agencies, or constitutions.
Answer:
B
Explanation:
Solar power can serve as a substitute for fossil fuels and can also counteract the effects of burning fossil fuels by using thermal energy.
The last one because it makes sense
So the system of checks and balances is that each government can limit the powers of the other government however this only done to make sure that no other government and the government itself does not become more powerful which makes sure that the power is balanced between them.
