Which statement describes solstices? A. They occur when the Sun reaches its highest or lowest point in the sky.
B. They affect the amount of sunlight in the Southern Hemisphere in May.
C. They contribute to the cycling of winters all year long in the Northern Hemisphere.
D. They increase the amount of rays from the Sun directly received in the Southern Hemisphere.

Can you think of a way a rock unit with an older fossil could be above a rock until with a younger fossil? describe the scenario.

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?