Which of the following is true of all geographic locations on earth?

a. they receive the same amount of precipitation over the course of a year.
b. they receive the same number of daylight hours over the course of a year.
c. their angle of sunlight is the same.
d. their numbers of warm and cold fronts are equal.

B

Explanation:

What differs is how the daylight hours are distributed across the whole year. For example, while the equator receives more or less the same number of daylight hours every day  (for about 12 hours every year), some regions such as the Arctic and Antarctic receive 6 months of sunlight and then 6 moths of darkness.

answer; hypnagogic sensations)

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.