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प्रश्न
Which one of the following is non-biodegradable?
(A) DDT
(B) Vegetable peel
(C) Cardboard
(D) Bark of trees
उत्तर
DDT
APPEARS IN
संबंधित प्रश्न
Following is a statement about pollution. Which type of pollution does it express?
Fog seems to be appearing in Delhi during day hours.
Match the pairs from 'A' and 'B' columns and explain the effect of pollution on human health.
| Column 'A' | Column 'B' |
| 1. Water containing cobalt | a. Mental retardedness |
| 2. Methane gas | b. Paralysis |
| 3. Water containing lead | c. Inflammation of lungs. |
| 4. Sulphur dioxide | d. Skin cancer |
| 5. Nitrogen dixoide | e. Irritation of eyes |
Give two examples of each of water, soil and air pollution from your residential area.
What is known as smog? What harm is done by smog especially in winter?
What is environmental pollution?
Distinguish between the following :
Biodegradable and Non-biodegradable Pollutants
Why is radioactive pollution more harmful than other types of pollutions?
Use your brain power !
What would happen if no kites (birds) are left in a particular region? Which living things would increase in number? Which would decrease?
See the diagram and answer the following question
What types of pollution are caused by open dumps?
An undesirable change in the environment is called as ______.
