Jijamata Udyan, the famous zoo in Mumbai has acclimatised Humboldt penguins. Why should penguins be acclimatised when kept at a place away from their natural habitat?

Paragraph based question: Read the following paragraph and answer the question based on it. Many waste materials are generated through the various daily human activities. This is called solid waste. If these waste materials are properly disposed of, they can be valuable source of energy. Currently, solid waste is a serious world wide problem as it causes both water and soil pollution. Solid waste is also serious problme from the point of view of economic growth, environment degradation and health. It has posed a serious threat to nature and human habitat because of the air, water and soil pollution it causes. Solid waste generated in the main metro cities of the state is approximately as follows-Mumbai: 500 tons, Pune: 1700 tons, Nagpur : 900 tons. When can be the wastes become valuable source of energy?