Question

survival of man is at stake if we do not converse our rich fauna justify

Answer 1

Animals play a vital role in man's life. They give milk and milk products. They help in ploughing and cultivating the fields. Fishes provide a nutritious diet are a rich source of protein. Insects are useful for the pollination of plants and crops. In this way every specie plays an important role in the ecosystem. In their absence man will not be able to fulfil his needs and live a healthy life.  So, it is rightly said that the survival of man is at stake if we do not conserve our rich fauna.