Aperson or object may have stored energy because of its

the answer is:

a person or object may have stored energy because of its potential energy

potential energy is stored energy in a object or person :D

your answer is "the 1950's"

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.