Basic needs are the factors essential for us to live. To learn about these essential factors, let us first discuss about the people who lived in ancient times.
People of the Stone Age lived in the jungle. They only needed air to breathe, water to quench their thirst and food for hunger. They could not survive without any of these factors. Therefore, air, water and food can be identified as basic human needs.
Air - Fresh, clean air is needed for life. But exhaust fumes emitted by vehicles, smoke emitted by factories and smoke that gathers inside houses due to the lack of chimneys as well as cigarette smoke results in air pollution. Inhalation of this polluted air increases the risk of falling ill. Thus, the first basic human need is clean air.
Water - Water is necessary for human survival. A bigger part of the earth is covered with oceans. Although there is sea water in abundance, we cannot use it in our day-today needs. Usable water is available only in the water resources such as rivers, inland reservoirs, ponds and springs. This water too can get polluted due to various reasons. Using polluted water is harmful. Everyone has to contribute and take responsibility for having clean water.
Food - Food provides us with the nutrition that is required for energy, growth of the body and protection from disease. We should therefore, consume a clean, healthy and balanced diet that consists of all the nutrients in required amounts. Today various types of chemicals are used in the production of food. Since such chemicals are harmful to health, you have to be careful in choosing food.