World Conservation Union maintains

According to world conservation union, which is the second significant threat to biodiversity?

The country which hosted the first world earth summit on conservation of encironment is

The country which hosted the first world earth summit on the conservation of environment is

The country which hosted the first world earth summit on the conservation of environment is

The IUCN (International Union for Conservation of Nature and Natural Resources) has head quarters in :

Introduction|The UN World Water Development Report, 2003|Water Scarcity and the Need for Water Conservation and Management|Summary