Which of the following statements is true?
low pressure is usually means nice weather.
air pressure is the same over the entire earth.
worldwide winds are caused by rising air at the poles and sinking air at the equator.
coastal breezes occur because water heats and cools more slowly than land.

D -Coastal breezes occur because water heats and cools more slowly than land.

Explanation:

the median of the data is 4.5.

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.