(1) Biodiversity hotspots are regions with very high levels of species richness and high degree of endemism. Eg. Western Ghats, Sri Lanka, Indo-Burma and Himalaya (2) In many cultures, tracts of forest were set aside, and all the trees and wildlife within were venerated and given total protection. Such sacred groves are found in Khasi and Jaintia, Hills in Meghalaya (3) The world summit on sustainable development held in 2002 in Johannesburg, South Africa. (4) Parthenium is an alien species