How is surface water naturally purified? A:freezing water destroys impurities

B:evaporation leaves impurities behind

C:sediments precipitate out

D:soil filters the water

How do you name a compound with more than two elements?

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to

20 the compound al(nh3)2 has atoms of nitrogen.