Pollution is a problem in both the United States and Canada. Burning fossil fuels is the main reason for pollution. People in both countries burn fossil fuels to get energy to run homes, cars, and factories. Many people believe that energy with little or no pollution should be used. One such energy is solar energy. It uses sunlight to turn heat into electricity. Another kind is wind energy. Wind is used to move machines that make electricity. Hydroelectric power is another kind of energy that uses falling water to produce electricity7. How are solar energy, wind energy, and hyrdroelectric power alike? A. They cause little or no pollution.
B. They cannot make electricity.
C. They are the main reason for pollution.
D. They are hard to make.

In the mid 1800s western settlers and american indians differed in their views about

When comparing the northern and southern hemisphere, why are the peak maximum and minimum values of insolation at different times of the year? specifically, why is the peak max of incoming solar radiation in june for the northern hemisphere, but in december for the southern hemisphere? pick the best, most complete answer. because of variations in the incident angle of solar radiation, due to the tilt of earth's axis, the northern hemisphere receives more direct solar radiation in june while the southern hemisphere receives less direct solar radiation. the reverse is true in december. because of earth's tilt, as the earth progresses in its revolution around the sun, the northern hemisphere is relatively closer to the sun in june while the southern hemisphere is relatively farther from the sun. the reverse is true in december. because of earth's elliptical orbit, the northern hemisphere is relatively closer to the sun in june/july while the southern hemisphere is relatively farther from the sun. the reverse is true in december. because of variations in the incident angle of solar radiation and the length of day, due to the tilt of earth's axis, the northern hemisphere receives more direct solar radiation and has longer daylight hours in june while the southern hemisphere receives less direct solar radiation and shorter daylight hours. the reverse is true in december.

On average, being married has a(n) effect on happiness.