Wash clothes or bathe
Answer the following questions in brief.
1. Name any two materials which can make rain water impure.
2. Name any two human activities which can cause water pollution.
3. Which two pollutants are often dumped by the factories into the rivers?
. Name any two diseases that may be caused by drinking polluted water.
Write the names of two types of materials, used by farmers, to increase
the production of crops.
swer the following questions.
How do wastes, from factories and fields, affect the aquatic animals?
ow can polluted water affect the crops?
ny are oil spills harmful for marine life?
te any four effects of water pollution.
e four ways of reducing water pollution.
Answers
Answer:
The groundwater level may be too deep, groundwater may be contaminated with minerals and chemicals such as arsenic or salt, surface water may be contaminated with faeces or chemicals. In these cases, rainwater harvesting can be an effective and low-cost solution.
The main causes of water pollution are most often man made and caused by increasing industrialization and human activities. Mostly the water bodies get polluted with municipal, industrial and agricultural waste and their unplanned leaking, run off, dumping and disposal.
Water pollution
Factories often dump dirty water, used chemicals and oils, sewage, and cafeteria waste directly into the ground or into a community water source, such as a river, lake, or stream
Typhoid. Someone can contract typhoid by consuming water or food that has been contaminated with feces from a person who already has typhoid. ...
Diarrhea. ...
Schistosomiasis. ...
Polio. ...
Arsenicosis.
Transplantation is the practice used for cultivating paddy. 25. Name the two types of substances which are added to two fields by the farmers to maintain the fertility of the soil. The two types of substances which are added two the fields by the farmers to maintain the fertility of soil are manure and fertilizer.