What causes the ph of water to be 7.0?
(a) the amount of h+ ions is greater than the amount of oh- ions.
(b) the amount of h+ ions is less than the amount of oh- ions.
(c) the amount of h+ ions is equal to the amount of oh- ions.

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.