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As there is not an adequate supply of water, hydroelectric power cannot be produced even though it does not pollute the environment. |
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Hydroelectric power does not pollute the environment but it can only be produced when plenty of water is available. |
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Hydroelectric power does not pollute the environment, but the production of this power is limited by the availability of water. |
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Even though hydroelectric power does not pollute the environment it cannot be produced as there is not sufficient water available. |
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As there is only a limited amount of water available, hydroelectric power, which does not pollute the environment, cannot be produced. |