The average temperature of the large rivers with nearly three degrees increased in the last hundred years. The discharge of cooling water and the rise in air temperature are the main causes . Also the temperature of smaller waters has increased by climate change .
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Try to cool off without resorting to air conditioning.
The use of A/C can increase your electricity bill by 33 %. A fan requires one tenth of the energy used by an A/C system; sunshades, blinds, shutters and the cool of the night use no energy at all.
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