HARD
6th CBSE
IMPORTANT
Earn 100

Is it good to sleep under a tree (a) during the day, (b) at night? Give reasons.

Important Questions on Air Around Us

MEDIUM
6th CBSE
IMPORTANT
People living in a certain region have a high incidence of skin cancer. Can you identify one possible cause for this?
HARD
6th CBSE
IMPORTANT
Why do you think air becomes thinner higher up?
HARD
6th CBSE
IMPORTANT
An aquarium owner, on a rather cold day, put a heater in his aquarium, which made the water warm, but not hot. He thought the fish would like that. However, all his fish died. What could be the reason for this?