EASY
4th CBSE
IMPORTANT
Earn 100

When is World Environment Day celebrated and why?

Important Questions on Keeping Our Earth Green and Clean

MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 14 - Keeping Our Earth Green and Clean>Exercises>Q C

Simi and her friends are planting trees in an abandoned empty piece of land and are encouraging their other friends also to do so. 

What is afforestation? How does it help us?

MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 14 - Keeping Our Earth Green and Clean>Exercises>Q C

Simi and her friends are planting trees in an abandoned empty piece of land and are encouraging their other friends also to do so. 

What value do we learn from Simi and her friends?

EASY
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 14 - Keeping Our Earth Green and Clean>Exercises>Q C
Why should we plant trees?
EASY
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 14 - Keeping Our Earth Green and Clean>Exercises>Q C
Why must be the wastewater from factories treated before letting it flow into the river? 
EASY
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 14 - Keeping Our Earth Green and Clean>Exercises>Q C
In what ways, air pollution affects us? 
MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 14 - Keeping Our Earth Green and Clean>Exercises>Q D
How can we keep the air clean?
MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 14 - Keeping Our Earth Green and Clean>Exercises>Q D
In what ways, can we reuse different items? 
MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 14 - Keeping Our Earth Green and Clean>Exercises>Q D
What is meant by biodegradable and non-biodegradable wastes? Explain with examples.