In crustaceans (e.g. shrimp, cray-fish, lobster), the metallic base of the respiratory pigment is :

The decomposition and recycling of organic matter from dead organisms is made possible to a large extent by :

The last stronghold of Indian Lions in their natural habitat is located in :

Which of the following places is known for Salt Water Crocodiles ?

Cashew tree, introduced by the Portuguese in India in the sixteenth century, was brought from :

Nagarjunasagar Dam is located on the river :