1 where does drinking water come
from? How might it become
polluted or contaminated?

ABOUT 71% PERCENT OF EARTH'S SURFACE IS WATER COVERED,OUT OF THAT ONLY 2.5 %IS FRESH WATER.WE GETS DRINKING WATER FROM CLEAN RIVERS ,LAKES AND EVEN GROUND WATER. WE ALSO FILTERS THE SEA WATERS TOO.

WE HUMANS ARE THE ONE WHO ACTUALLY POLLUTE  THE WATER BODIES, BECAUSE WE THROW DOMESTIC AND INDUSTRY WASTES IN THE WATER BODIES AND THE AQUATIC ANIMALS ARE DYING BECAUSE OF THIS ACT. IF WE SAVE  THE WATER BODIES THEN THERE WOULD NO BE ANY POLLUTION etc

Explanation:

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!