Question

in comparison to coal and oil hydroelectricity is a key source of energy comment on this statement

Answer 1

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Comparative study of following points will help you:

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Thermal Power:
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1️⃣ It is generated from petroleum (oil) or coal.

2️⃣ Its sources (coal and oil) are exhaustible.

3️⃣ On burning coal and oil they cause a lot of pollution.

4️⃣ It is expensive in the long run.


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Hydroelectric Power:
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1️⃣ It generated from water falling on turbines.

2️⃣ Its source is perennial, i.e., inexhaustible.

3️⃣ It causes no pollution.

4️⃣ It is cheaper in the long run.

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