Answer:
A
C
D
Step-by-step explanation:
Industrial Waste:
The waste materials generated by industries or industrial processes, is called industrial waste. It includes chemicals, trash, oils, solvents, dirt and gravel, many harmful gases etc. These are dumped in seas, rivers or land without adequate treatment. Thus, become a large source of environmental pollution.
Sewer Disposal:
the process of removing and destroying or converting the noxious substances of sewage especially by ammonification and nitrification through bacterial action
Runoff:
Some definitions of runoff: 1. That part of the precipitation, snow melt, or irrigation water that appears in uncontrolled (not regulated by a dam upstream) surface streams, rivers, drains or sewers.