Question 1
Question: A natural phenomenon that becomes harmful due to pollution is _____________.
1. | global warming |
2. | ecological balance |
3. | greenhouse effect |
4. | desertification |
Answer: 3
Question 2
1. | CO2 |
2. | SO2 |
3. | CO |
4. | CFC |
Answer: 4
Question 3
1. | burning |
2. | dumping |
3. | burying |
4. | recycling |
Answer: 4
Question 4
1. | biodegradable |
2. | non-biodegradable |
3. | hazardous |
4. | toxic |
Answer: 1
Question 5
1. | iron nails |
2. | plastic mugs |
3. | leather belts |
4. | silver foil |
Answer: 3
Question 6
1. | animal bones |
2. | nylon |
3. | tea leaves |
4. | wool |
Answer: 2
Question 7
1. | DDT |
2. | CFC |
3. | Radioactive substances |
4. | PAN |
Answer: 3
Question 8
1. | small fish |
2. | microscopic animals |
3. | big fish |
4. | water birds |
Answer: 4
Question 9
1. | CFC |
2. | PAN |
3. | DDT |
4. | PAC |
Answer: 3
Question 10
1. | concentration |
2. | biomagnification |
3. | expansion |
4. | pollution |
Answer: 2
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