MEDIUM
3rd CBSE
IMPORTANT
Earn 100

What is humus? How is it formed?

Important Questions on Rocks and Soils

MEDIUM
3rd CBSE
IMPORTANT
How will you show that soil contains: (a) water, (b) air?
MEDIUM
3rd CBSE
IMPORTANT
What are the different types of soil? Describe them.
EASY
3rd CBSE
IMPORTANT
Which soil is good for growing most types of plants? Why?
MEDIUM
3rd CBSE
IMPORTANT
When Veena went to Kullu on a holiday; she found round, smooth pebbles on the banks of the river Beas. Why do you think the stones were round and smooth? 
MEDIUM
3rd CBSE
IMPORTANT
Why are rice seeds sown in a nursery and transplanted in the main field just before the rainy season?
EASY
3rd CBSE
IMPORTANT
You see a family member sweeping fallen leaves and throwing them in a dustbin. How will you explain that dead plant material makes soil fertile? What would you do with it instead?
EASY
3rd CBSE
IMPORTANT
Shymala and her friends cleared the stones in the garden of their flat complex so that no one would be badly hurt if they fall down while playing in the garden. What values can you learn from Shymala and her friends?