How are elements arranged on the periodic table? A)They are arranged to highlight different elements with similar isotopes.

B)They are arranged in order from most abundant to very rare and unstable.

C)They are arranged to highlight similarities between different elements.

D)They are arranged in order of the date of discovery.

In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. ... In a periodic table arranged in order of increasing atomic number, elements having similar chemical properties naturally line up in the same column (group).

Explanation: So it would be  [C] OR [A]

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

i'm pretty sure its b i might be wrong though!