Tag: water and air and their importance

Energy obtained by using wind, tides, solar etc. in renewable energy, also called non-conventional energy, solar energy is inexhaustible source of energy.

Fuel gas, coal, petroleum, cannot be replenished back once they are finished, they are non-renewable sources, while forest if tried can be obtained back.

Renewable products can be obtained back once finished, products from agricultural activities can be considered as a renewable product.

• Renewable energy is energy generated from natural resources —such as sunlight, wind, rain, tides, trees and geothermal heat—which are renewable (naturally replenished).
• Trees are very important for us as a renewable resource. Trees are a natural resource that can be renewed by planting of trees and replacing the trees that are harvested for use by people.
  
• Hence the Best source of renewable energy is trees.
• So, the correct answer is 'Trees'.

Renewable source of energy is a type of resource which can be replenished back easily. Coal, petroleum, kerosene will take millions of years to replenish back so, they are non-renewable source of energy.

Inexhaustible resources are also called as renewable resources. These are present win abundance in the nature. They cannot be depleted or exhausted by human activity. Examples include water, sand and solar energy. Human energy is the greatest inexhaustible resource.

A non-renewable resource (also called as finite resource) is a resource, that does not renew itself at a sufficient rate for sustainable economic extraction. Non-renewable resources are resources, that are not easily replenished by the environment. Earth minerals and metal ores, fossil fuels (such as coal, petroleum, and natural gas), nuclear fuels, and groundwater in certain aquifers are all non-renewable resources.

The resources which can be replenished again after their consumption are referred as the renewable sources of energy. Water is considered as the renewable form of energy. The water reserves can be replenished by the rainfall. The water resource is degradable form of resource. The contaminants and pollutants from the industries can degrade the quality of the water in the water bodies.