ICSE Worksheet for chapter-9 Natural Resources class 9

Worksheet For class 9

Find ICSE Worksheet for chapter-9 Natural Resources class 9

CLASS-9

BOARD: ICSE

BIOLOGY Worksheet - 9

TOPIC: Natural Resources

For other ICSE Worksheet for class 9 Science check out main page of Physics Wallah.

1. If there were no atmosphere around the earth, the temperature of the earth will
   1. Increase
   2. Go on decreasing
   3. Increase during day and decrease during night
   4. Be unaffected
2. Which of the following is not an important factor for growth of plants
   1. Nutrient content of soil
   2. Distance of water body from the soil
   3. Amount of humus present in the soil
   4. Depth of soil
3. What would happen, if all the oxygen present in the environment is converted to ozone?
   1. We will be protected more
   2. It will become poisonous and kill living forms
   3. Ozone is not stable, hence it will be toxic
   4. It will help harmful sun radiations to reach earth and damage many life forms.
4. How is soil formed?
5. List any three human activities which would lead to an increase in the carbon dioxide content of air.
6. Why do organisms need water?
7. Explain the role of B.O.D in water pollution.
8. Why is the atmosphere essential for life?
9. How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resourc
10. Write a note on how forests influence the quality of our air, soil and water resources.