UnScramble this Word: o p e r c o?

Questions

Definitions : The earth's atmosphere and the space beyond is known as _______.?

Definitions : The effect produced when sound is reflected back is known as a(n) _______.?

Definitions : The feeling of having experienced something before is known as _______.?

Definitions : The science of preparing and dispensing drugs is ________.?

Definitions : The science of providing men, equipment and supplies for military operations is called ___________.?