Biology 10 Chapter 16 Man and His Environment - 8

Biology 10 Chapter 16
Man and His Environment - 8

1. Green house gases are?

a) Ozone
b) Methane
c) All above
d) CO2

2. Polar ice caps and glaciers melt due to?

a) Industrial fluent
b) Global warning
c) Heat pollution
d) Temperature

3. Acidic rain has a ptl of?

a) 3-6
b) 6-7
c) 5-7
d) 4-6

4. Which one lowers the ptl of water?

a) Deforestation
b) Acidic rain
c) Urbanization
d) Global warming

5. Demerits of acidic rain are?

a) Damage to historical monuments
b) All Above
c) Corrosion of metal surface
d) Damage to the leaf baric

6. Clearing of forests is?

a) Global warning
b) Aforestation
c) Deforestation
d) Reforestation

7. Flood, Droughts, landslides and erosions are due to?

a) Deforestation
b) Urbanization
c) Global warning
d) Acid rain

8. About 250 years ago the world population was?

a) 600 billion
b) 600 million
c) 6000 billion
d) 600 trillion

9. At 2025 the world population will be?

a) 8 billion
b) 600 millions
c) 8 Million
d) 8 trillion

10. The current level of urbanization in Pakistan is about?a) 36 %
b) 32 %
c) 34 %
d) 32 %

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