Changes Around Us

Introduction|Is Air Present Every Where Around Us |Atmosphere|OMR

The bond angle around atom which uses sp^(2) hybridisation is :

Why is the area under pastures decreasing in India? How do the changes in the economy effect the changes in land use? Explain.

Which cells of the retina enable us to see coloured objects around us?

Which cell of retina enable us to see coloured objects around us ?