It is hydropower the first option
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For the answer, the question above, the similarities of both mountains and plains is that it can support any life forms like trees and animals Both types of land have a source of water which is essential for living things. For water comes from mountains and pours down to the plains.
For mountain is once a plain.
Answer:
The open cavities and caves of limestone aquifers.
Explanation:
This is In general where Aquifers occur may help you