Answer:
when they drink water, through trapped and stored energy in plants converting the Sun's energy into chemical energy.
Explanation:
The Celsius scale. Americans use the other one.
Since you say ‘which’ , in order to answer you, we would need the options you are given, but my answer would be
1. Not reusable
2. Might use up someday
3. Burning it will produce carbon dioxide and worsen global warming
Hope these can help :)