(i) Mention the main reasons for maximum bio-diversity in tropical rain forests.
(ii) Give the full form of IUCN.
(ii) What do you mean by sacred groves. Name such groves in Meghalaya, Rajasthan and Madhya Pradesh.
(iv) When, where and in which country earth summit was held?

Explanation

(i) The main reasons for maximum biodiversity in tropical rain forests are :
(a) Tropical rainforests receive almost 12 hours of sunlight everyday. As there is plenty of sunlight, there is also a great amount of energy locked up in the rainforest.
(b) There are more places for plants to grow and animals to live. Since all their needs are met in the canopy.
(ii) International Union for Conservation of Nature and Natural Resources.
(iii) Sacred groves in India represents forest fragments of different sizes, which are communally protected and which usually have a significant religious connection for the protecting community. Hunting etc. are prohibited with in such areas. Meghalaya: West Garo hills, East Garo hills, South Garo hills, Ri Bhoi, West Khasi and Jaintia hills. Rajasthan : Jain Samadhi, Radha Krishna Temple, etc. (Ajmer-district), Viratra Kiaan (District-Barmer), Aashapoorna Devi Ki Oxan (Distt-Jaisalmer), Darodji, Deendayal Upadhyay park (DisttUdaipur).
Madhya Pradesh: Devkot Matikot, Devsthali Budhadev.
(iv) The United Nation conference on Environment and Development 92 or the Earth Summit attracted 25,000-45,000 people at Rio de Janeiro (Brazil) in June 1992.