<span>1,040 mph
Dude just google it. </span>
Answer:
Wastewater treatment
Explanation:
The major aim of wastewater treatment is to remove as much of the suspended solids as possible before the remaining water, called effluent, is discharged back to the environment. As solid material decays, it uses up oxygen, which is needed by the plants and animals living in the water.
The answer is A agriculture
Answer:
because there might be changes in the future which could make the estimates unreliable for example war or decline in economy
Explanation:
