How would life on earth change if there was no clean water or air?

With no water supply, all vegetation would soon die out and the world would resemble a brownish dot, rather than a green and blue one. Clouds would cease to formulate and precipitation would stop as a necessary consequence, meaning that the weather would be dictated almost entirely by wind patterns.

are food will die then the animals will die then we would die and the earth wouldn't be green no more it will be brown and bry there will be no clouds ether or grass

littering streams           is the answer

yes? sounds right, but you didn’t ask a question.