MEDIUM
9th CBSE
IMPORTANT
Earn 100

Make simple sketch to show oxygen cycle in nature.

Important Questions on Natural Resources

EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 6 - Natural Resources>Exercise>Q 11
Oxygen is necessary for biological process. Can oxygen also prove harmful for some biological processes? Discuss.
MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 6 - Natural Resources>Exercise>Q 1
What is the biogeochemical cycle? Explain the pathway of the carbon and nitrogen cycle with the help of a labeled diagram.
MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 6 - Natural Resources>Exercise>Q 2
What do you mean by water cycle? Explain with the help of well labelled diagram.
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 6 - Natural Resources>Exercise>Q 3

How does energy enter the biosphere ?

EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 6 - Natural Resources>Exercise>Q 3

Name one natural and one man-made process by which CO2 returns to the atmosphere?

MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 6 - Natural Resources>Exercise>Q 3

In the following bio-geochemical cycle, name and define the processes marked as (X), (Y) and (Z).

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EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 6 - Natural Resources>Exercise>Q 4
What is soil erosion? Give two methods of reducing it.
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 6 - Natural Resources>Exercise>Q 4
Name two biologically important compounds that contain both oxygen and nitrogen?