Final

Question 1

List factors of water quality

Answer 1

Taste and odour 
Turbidity and colour
Toxic substances and other pollutants
Bacteria 
Hardness or material content 
PH ( acidic or basic )
Dissolved oxygen 
Solids including floating materials 
Dissolved solids

Question 2

How is water distributed on the earth

Answer 2

3% is fresh
0.0009% is in the atmosphere
97% is salt

26% is land
74% is water