The correct answer is the fourth option: sound. The dog becomes afraid when it <em>hears</em> the lightning.
There is a messy and water is everywhere.
Explanation:
I think that the worse the quality of the water is the more negative effects it is going to have on the salamanders and the better the quality of the water is the more positive effects it is going to have on the salamanders because the in other study’s the more polluted a body of water was the more defects animals had that used that body of water
The way in wich carbon is used and reused through the ecosystem is called the carbon cycle