The backbone of our civilization is based on the natural resources it possesses. Natural resources include all living and non-living things that exist on this earth. But the continuous usage of all these resources have restricted their usage further. The natural resources available to us have been categorized into the following class: agricultural land, forest land, and its various services and products, natural land for scientific purpose, aesthetic recreation, salt and freshwater fisheries, minerals, renewable non-mineral energies, water resources, and assimilative capability of waste from all parts of the environment. Some of these resources are natural renewable resources, whereas others are non-renewable. In this article, we will be concentrating on some of the common examples.
If we go back to the history, we find that fossil fuels (which were relatively inexpensive) were the main source of energy. But the scenario has changed in the modern world. The rising prices of fuel and increasing environmental and political concerns have deviated the mass towards the resources, which can be renewed. Mineral ore and fossil fuels are examples of non-renewable resources. However, geological processes might generate more stock of the non-renewable resources with time, but artificially producing these resources is not possible. Thus, it is a good practice to make use of renewable sources when required, as they can be replenished.
Examples of Renewable Energy Resources
The energy derived from the Sun is called solar energy. The Sun has always been in the service of the Earth. It heats the Earth and the oceans, thus, enabling daily activities of human beings. Nowadays, photovoltaic panels are used to convert light into energy. The best thing is that they require very less maintenance once they are installed. Moreover, solar panels do not contribute to pollution. But the manufacturing of a solar panel requires some toxic elements, and also it is a little expensive.
Windmills have been used for energy production for many decades. Similar to solar energy, wind energy also does not contribute to pollution. The wind is converted into electric energy with the help of wind turbines. Windmills for electricity, no doubt, are a great invention, but the moving parts can at times be fatal for the flying creatures.
Like other resources mentioned above, hydropower has also been used to generate energy since ages and is known as hydroelectric power. As the name suggests, energy is generated by churning water with the help of massive generators. But this too has an impact on the environment. It affects aquatic animals, and the aquatic ecosystem is disturbed in turn.
Plants and trees contribute in creating biomass or biofuels. The residual plants from paper making, methane gas obtained from the process of decomposition, and plants grown specifically as a source of energy combine to create biomass energy. Biofuel is used for lighting and cooking. Nowadays, crops are cultivated specifically for generating such a type of energy.
The Earth has a huge store of heated energy known as the geothermal energy. It can be in the form of a hot spring, steam reservoir, or sun-heated crust of the Earth. The various sources of geothermal energy has given us technology like heat pumps.
The other examples are tidal electricity or energy that is extracted from the high tides and wave energy that we get from the waves. The advantages of such sources of energy are innumerable. The best thing about using renewable energy is that these resources are not going to deplete over time. They will be naturally replenished and will go a long way for the future generations.
The knowledge of these examples is essential because once the non-renewable resources are exhausted, we will be totally dependent on these alternative energy sources. So let us join our hands together and take a pledge that we will do our best to conserve energy, so that our coming generations can live in peace.