i. Oxygen,
ii. carbon dioxide,
iii. carbon dioxide,
iv. nitrogen, and
v. oxygen.
Question
Name the gas required (i) for breathing, (ii) for photosynthesis, (iii) to extinguish a fire, (iv) to make fertilisers, and (v) for burning.
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On a Sunday morning Paheli’s friend visited her home. She wanted to see some flowering plants in the nearby garden. Both of them went to the garden. While returning from the garden they also observed some flowering plants on the roadside. But to their surprise they found that the leaves and flowers of these roadside plants were comparatively very dull. Can you help them to know why?
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