Classify resources.
Resources: Any materials that are accessible in an efficient manner for achieving a particular activity with greater ease is called a resource.
Based on the availability, resources are classified into two types:
i. Exhaustible resources: Resources that are available in a limited amount and take million years to form in nature. Example: Coal, Petrol.
ii. Non-Exhaustible resources: Resources that are available in abundance or in large amounts in nature. Example: Sunlight, Air, water, etc.
2. Man-made Resources: These resources are made by humans by utilizing natural resources.