Hint: The resources which are obtained naturally from the earth are called natural resources. Non-renewable resources need to be conserved and used wisely. These resources include coal, petroleum, natural gas, oils and are formed after decomposition of organic compounds after millions of years under the soil.
Complete Answer: The various resources which are available naturally to us are called natural resources. Resources can be classified into two types- Renewable and non-renewable resources. 1. Renewable resources- The resources which are readily available in nature are called renewable resources. These resources are restocked at the same rate at which they are consumed. Some examples of such resources are- water energy, winds, solar energy. 2. Non- renewable resources- The resources which are limited in nature and are being consumed at a faster rate than they are restocked are called non-renewable resources. So, they should be used wisely. They are also called as exhaustible sources of energy. Fossil fuels are formed after compression under the layer of earth in millions of years. It is a type of non-renewable resource.
So, among the given options, the correct answer is fossil fuel, option (D).
Additional information: Some important advantages of natural resources include: - They maintain the balance in the atmosphere. - Some of the natural resources are used in commercial industries as raw materials. - Water is an important resource which can be used to generate electricity in hydropower plants. - Wind can also be used to generate electricity with the help of wind mills. - Nowadays, solar cells are very popular and are used in various appliances. This solar energy has replaced many high power consuming electrical appliances.
Note: On the basis of origin, natural resources can be biotic (living) and abiotic (non-living). On the basis of exhaustibility, they can be either renewable or nonrenewable. Non-renewable resources need to be conserved and used efficiently.