HARD
6th CBSE
IMPORTANT
Earn 100

What is oxygen cycle? Explain with a diagram.

Important Questions on Air Around Us

MEDIUM
6th CBSE
IMPORTANT
This has reduced the generation of oxygen through photosynthesis.
EASY
6th CBSE
IMPORTANT
We cannot use parachutes without this. (Air/Water)
EASY
6th CBSE
IMPORTANT
Air contains 78% of this gas. (Carbon dioxide/ Oxygen/ Nitrogen)
MEDIUM
6th CBSE
IMPORTANT
It protects us from harmful ultraviolet rays of the sun.
MEDIUM
6th CBSE
IMPORTANT

Name the following:

Leaves take up this gas from air to produce oxygen during photosynthesis. (Oxygen/ Carbon dioxide)

HARD
6th CBSE
IMPORTANT
Is it good to sleep under a tree? (a) During the day (b) At night. Give reasons.
HARD
6th CBSE
IMPORTANT
People living in a certain region have a high incidence of skin cancer. Can you identify one possible cause for this?
MEDIUM
6th CBSE
IMPORTANT
What does your mother do with the extra food cooked at home? Does she throw it away or does she store it in the fridge?