Diversification in plant life appeared

Why do animals have greater diversification than plant diversity?

During the long period (gt 3 billion years) since the origin and diversification of life on earth there are how many episodes of mass extinction of species

After about how many years of formation of earth,life appeared on this planet?

After about how many years of formation of earth,life appeared on this planet?

First known flowering plants appeared in

The first flowering plants appeared in