PDF chapter test TRY NOW
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 road side. 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?
The dull appearance of the roadside plants is due to the in the area. It includes emitted from automobiles, chimneys and industries. These stick to the plants and make them appear dull.