Human as a herbivore and carnivore, with a very wide dietary ranges, is remarkably well equipped to exploit the variable habitats of the world and consumes a substantial number of different plant and animal species. Man is also dependent on herbivores that are capable of relatively easy management.

There are three types of biodiversity :

1. Genetic diversity, 2. Ecosystem diversity, 3. Species diversity.

The world conservation strategy has suggested the following steps for biodiversity conservation:

(i) Efforts should be made to preserve the species that are endangered.

(ii) Prevention of extinction requires proper planning and management.

(iii) Varieties of food crops, forage plants, timber trees, livestock, animals and their wild relatives should be preserved;

(iv) Each country should identify habitats of wild relatives and ensure their protection.

(v) Habitats where species feed, breed, rest and nurse their young should be safeguarded and protected.

(vi) International trade in wild plants and animals be regulated.