MEDIUM
7th CBSE
IMPORTANT
Earn 100

All cigarette packets carry a statutory warning ‘Smoking is injurious to health’. Find out why.

Important Questions on Respiration in Organisms

EASY
7th CBSE
IMPORTANT
Reshma was cleaning her aquarium. She was transferring the fish to a bucket. One of the fish fell out. Before she could put the fish back in water, it died. Why?
MEDIUM
7th CBSE
IMPORTANT
Raghu loves to water his plants. He was watering them three times a day even during the rainy season. To his surprise, his potted plants started dying. What could be the reason?
HARD
7th CBSE
IMPORTANT
Manish’s legs started aching after a 1000 m race. He rested and practised deep breathing. This gave him lot of relief and the pain disappeared after some time. Why?