Consider the following statements: 1. Biodiversity hotspots are located only in tropical regions. 2. India has four biodiversity hotspots i.e., Eastern Himalayas, Western Himalayas, Western Ghats and Andaman and Nicobar Islands. Which of the statements given above is/are correct?

A pesticide which is a chlorinated hydrocarbon is sprayed on a food crop. The food chain is: Food crop – Rat – Snake – Hawk. In this food chain, the highest concentration of the pesticide would accumu…

With reference to soil conservation, consider the following practices: 1. Crop rotation 2. Sand fences 3. Terracing 4. Wind breaks Which of the above are considered appropriate methods for soil conser…

Consider the following: 1. Oxides of Hydrogen 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above causes/cause acid rain?

The United Nations Framework Convention on Climate Change (UNFCCC) is an international treaty drawn at

Which feature of some species of blue-green algae helps promote them as bio-fertilizers?

India is a party to the Ramsar Convention and has declared many areas as Ramsar Sites. Which of the following statements best describes as to how we should maintain these sites in the context of this …