Question

D. 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? 4. Name any two diseases that may be caused by drinking polluted water. 5. Write the names of two types of materials, used by farmers, to increase the production of crops. E. Answer the following questions. 1. How do wastes, from factories and fields, affect the aquatic animals? 2. How can polluted water affect the crops? 3. Why are oil spills harmful for marine life? 4. State any four effects of water pollution. 5. State four ways of reducing water pollution.​

Answer 1

Answer:

a). nitrous oxide, sulphur oxide

b).water of factories

c).zinc,copper

d). diarrhoea,cholera

e). pesticides, fertilizers

f).the water from factories has low pH level which may cause acid rain that may kill aquatic animals

g).the water used for irrigation affect the crops which is polluted

h).kills of aquatic animals,acid rain, disease for humans,not sufficient pure water for drinking

I).rain water harvesting,water conservation,less use of chemicals,use less plastic