A picture is needed to answer.
Water treatment is any process that improves the quality of water to make it more acceptable for a specific end- use. The end use may be drinking, industrial water supply, irrigation,river flow maintenance, water recreation or many other uses, including being safely returned to the enviroment
Answer:
W = Animal
X = Bacteria
Y = Protist
Z = Plant
(may or may not be right btw)
Gold's natural state is solid. Gold is a soft, heavy, yellow elemental metal that has a great value. Gold has a fixed shape and volume and its natural state is solid.