Which best describes the current geologic age

Explanation:

Age of mammals refers to the geologic age when the mammals are considered to be placed on the highest hierarchy on lands. The age started around  65 million years ago, after dinosaurs (which are reptiles) started to extinct.

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because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.