Answer:
Hydro power
Advantage- Clean source
Safe
Disadvantage- Expensive
Environmental consequences
Coal
Advantage- Easy to find
Affordable
Disadvantage- Non renewable
Pollution
Explanation:
I helped you out with two of them
Fast in gas
don't move in solid
alittle freely in liquid
Answer:
restrict population growth ( second choice).
Your answer is C forms of the same element that differ in the number of neutrons in each atom because if the number of neutrons change the whole element changes.