Hi there! Air and sunlight can definitely be reused. Those are abundant and renewable resources. Therefore, A and D are eliminated. There is a limited amount of water, however, it's impossible to run out of it to the point that there's no more on Earth. C is out. The only answer choice that makes sense is coal, because it's a nonrenewable resource, and it takes millions of years to make more of. It's a fossil fuel, so once we use them up, we can't get anymore during our lives. The answer is B: coal.
A because if something happened to that organism then the organism relying on it will either go extinct or just die out due to starvation
Answer:
Pb(NO3)2 + 2NaCl = 2NaNO3 + PbCl2
Answer:
SHE IS INSULATING THE WIRE SO THAT NO ONE GETS SHOCKED IF THEY ACCIDENTALLY TOUCH IT
2NaBr + Ca(OH)2 ➡️ CaBr2 + 2NaOH
