EVS Answer The Following question.

Natural – horse, water hyacinth, sunlight, dolphin, water, trees, cottonwool.
Manmade – soil, stone, book, pen, chair, table, brick.

The two causes of water pollution are as follows:
1. Waste water given out from factories are let into water bodies without processing.
2. Chemical fertilizers and pesticides are used in agriculture which seep into the soil and finally flow into rivers with rainwater.