ECONOMICS (CBSE/UGC NET)

Detailed explanation-1: -Air is a third critical resource for humans, plants, animals and all other organisms within a natural area. Air must be monitored in order to control and lower pollution levels, control smoke caused by wildland fires, and to monitor air quality.

Detailed explanation-2: -Air is the invisible mixture of gases that surrounds Earth. Air contains important substances, such as oxygen and nitrogen, that most species need to survive. Human beings (Homo sapiens), of course, are one of those species. Sometimes, the word “atmosphere” is used instead of the word “air."

Detailed explanation-3: -Air is an extremely important natural resource, as living organisms breathe in air. A human being breathes about 22, 000 times in a day and, takes about 16 kg of air into the body during this process. Like air, water is another abiotic component of the environment, which is also essential for all living beings.

Detailed explanation-4: -Air is a renewable resource. All living organisms need oxygen, nitrogen (directly or indirectly), carbon (directly or indirectly) and many other gases in small quantities for their survival.

Detailed explanation-5: -Air is important for living things. Breathing is part of a process called respiration. During respiration, a living thing takes in oxygen from the air and gives out carbon dioxide. This process gives animals and plants the energy to eat, grow, and live life!