Page 337 - Demo

336 Arrow-Puffin-4_Semester-1 SocialPlants are a very important natural resource. They provide us food and oxygen to breathe. Wood is used as fuel and as raw material to make paper and furniture. The roots, leaves and stems of some plants are used for making medicines. That is why plants are called green gold.Non-Renewable ResourcesNatural resources which get exhausted and are not renewable are called non-renewableresources. Coal, petroleum, natural gas and minerals used in nuclear energy are some of the non-renewable resources. Non-renewable resources are also called exhaustible resources.Coal is found under the Earth and is the most important source of power. It is used for producing heat and electricity. It is also used in engines and factories. The largest coal mine in India is in Jharia.Petroleum is known as black gold. Petrol, diesel and other important products are obtained from petroleum. Petrol and diesel are used as fuel. Digboi in Assam is an important petroleum refinery.Nuclear energy is produced from minerals. It is used for generating power and explosives. An important nuclear plant in India is in Tarapur in Maharashtra.WindmillsWhat is petroleum also known as?CheckpointCoal Mines of Jharia Petroleum Refinery in DigboiConservation of ResourcesIt is very important to use the natural resources very carefully so that they last long. The non-renewable sources are getting depleted at a very fast rate. To conserve the resources, we should try to use renewable resources and that too wisely.India is the third-largest producer and consumer of electricity in the world.Fact