Decline in the population of indian native fishes due to introduction of Clarias gariepinus in river Yamuna can be categoriesd as
Co-extinction
Habitat fragmentation
Over exploitation
Allen species invasion
Is it possible that productivity and diversity of a natural community remain constant over a time period of, say one hundred years ?
What is Red Data Book ?
Regional diversity is also called
In India, forests constitute about
Plant for which India is secondary centre for domestication is