The answer is between A and C.
Answer:
Explanation:
Option D: <u><em>Increasing the mass by sitting people inside</em></u>
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they are caused by mutation. the best example of it are human blood groups.
The temperature would approximately be around 32 to -13 degrees F
Answer:
A
Explanation:
Coal is majorly used to produces electricity. The coal is ignited and the heat produced used to heat water to steam. The steam is then used to drive turbines with a dynamo effect to produce electricity. Turning off lights when not in use reduces the demand for electricity hence reducing the amount of coal needed to meet this demand.
Other ways to conserve energy is using bulbs with low energy demand - such as LEDs - and improving natural lighting indoors.
