The answer that describes the use of commercial use of water is A
Answer:
Unrestricted submarine warfare is a type of naval warfare in which submarines sink merchant ships and tankers without warning. I don't know what you want for an example, but Germany used it in World War 1.
An essential nutrient is a nutrient required for normal body functioning that can not be synthesized by the body. Categories of essential nutrient include vitamins, dietary minerals, essential fatty acids and essential amino acids.
They are involved in "cooperative pretend play".
Cooperative pretend play includes the division of endeavors among youngsters
with a specific end goal to achieve a shared objective. In this sort of play,
everyone wins. Play is the manner by which youthful youngsters learn. Through
play, youngsters build up the aptitudes they have to grow their physical,
passionate, social, and intellectual capacities.
