PH-839
Energy resources
Physics · Secondary 3 · Medium · Energy resources
At present, 40% of a country’s electricity is generated from coal and 10% from wind. The country decides to replace half of the coal-generated electricity with wind power. Assuming demand stays the same, what happens to the total carbon dioxide emissions from its power stations?
- They increase.
- They decrease.
- They stay the same.
- They first increase, then decrease.
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