what causes a hemisphere on earth to have summer A direct sunlight from the son hitting that hemisphere. B indirect sunshine from the sun hitting that hemisphere. C that hemisphere closest to the sun relative to its closesness at other parts of the year

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

Explain earth's motion, using the terms "precession" and "rotation" in your answer.