Advertisements
Advertisements
Question
Phosphate containing fertilisers cause water pollution. Addition of such compounds in water bodies causes:
(i) enhanced growth of algae.
(ii) decrease in amount of dissolved oxygen in water.
(iii) deposition of calcium phosphate.
(iv) increase in fish population.
Solution
(i) enhanced growth of algae.
(ii) decrease in amount of dissolved oxygen in water.
Explanation:
Fertilizers containing phosphate present in water help in the excessive growth of aquatic plants and algae. Micro-organisms which decompose these plants consume oxygen. As a result, the amount of dissolved oxygen in the water decreases.
APPEARS IN
RELATED QUESTIONS
Explain phenomenon of acid rain.
Explain the following :
(i) Eutrophication ;
(ii) Biomagnification
Mention any two sources of water pollution.
With reference to the sources of water pollutants answer the following question:
How do the radioactive wastes get into the water bodies?
We should save water.
Do not throw plastic garbage when you go near beaches.
Usage of chemical pesticides and fertilisers causes ________ pollution.
What are the pollutions caused by the objects given below?
- Loud Speaker
- Plastic
Name any two water pollutants which are toxic for both plants and animals.
Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of ______.
