Which of the following is an indicator of good water quality? (2 points)

ph lower than 5.0

high levels of fecal coliform

high levels of dissolved oxygen

all of the above

High levels of dissolved oxygen

Explanation:

because if you know the structure of water it has h2O  and the o is the dissolved oxygen if you have high levels of that then you are good i hope this helps

since there isn't any suggested answers i will give you the reason and hopefully you can figure it

south africa, or rather all of africa, has not been in the location in which it is nowadays throughout the geological past. after the super-continent pangaea started to break apart, gondwanaland, in which was africa, moved further south, and parts of it came to be very close to the south pole. because the climate in this part of the world is very cold due to the very dispersed sun rays in there, what is now south africa, started to freeze, and the conditions were right for the formation of glaciers. the glaciers existed up until the period when gondwanaland started to break apart and what is now africa started to move towards north, sp it warmed up and the glaciers melted.