Understanding what is air requires examining multiple perspectives and considerations. Air | Composition, Oxygen, Nitrogen | Britannica. Air, mixture of gases comprising the Earth’s atmosphere. The mixture contains a group of gases of nearly constant concentrations and a group with concentrations that are variable in both space and time. Building on this, air - National Geographic Society.
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. AIR Definition & Meaning - Merriam-Webster. The meaning of AIR is the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth; also : the equivalent mix of gases on another celestial object (such as a planet). Air - Simple English Wikipedia, the free encyclopedia. Air is a mixture of many gases and tiny dust particles.
It is the clear gas in which living things live and breathe. It has an indefinite shape and volume. In this context, it has mass and weight, because it is matter. The weight of air creates atmospheric pressure. There is no air in outer space.
- Center for Science Education. Air is a mixture of gases, most of which are naturally occurring. Air also contains a significant amount of human-made air pollutants, including some that are not safe to breathe and some that are causing the climate to warm. In this context, air - Energy Education. Air is a mixture of several gases that is a precious resource and a necessity of life.
Pure air is completely invisible and odourless, however pollutants in the air can cause it to have a coloured tinge or odour. Air: What is, composition, functions, properties and pollution. Air is a mixture of gases that constitutes the Earth’s atmosphere and is essential for life on our planet. Composed mainly of nitrogen and oxygen, air performs vital functions such as the support of life, climate regulation and protection against solar radiation.
This perspective suggests that, - The Institute for Environmental Research and Education. Air is not a vacuum, but a dynamic and complex mixture of gases, particulate matter, and even living organisms that forms the Earth’s atmosphere, providing the life-sustaining environment upon which all terrestrial life depends. Air (Meaning and Explanation). We commonly call air the homogeneous mixture of atmospheric gases that are retained by the gravity of our planet. Air is a gaseous mixture of utmost importance for life on Earth, since it fulfills the functions of protection from solar rays and other foreign elements such as meteorites.
- freechemistryonline.com.
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