Fundamental substances that cannot be broken down chemically into simpler subsances
a) elements
b) ions
c) bonds
d)electrons

A. Elements

Elements are substances that cannot be separated into simpler substances. Salt is made up of the elements sodium and chloride. Water is made up of the elements hydrogen and oxygen, to list a few.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

the answer is d. 74.02