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- The Earth's atmosphere is the layer of gasses around the Earth. It is held in place by Earth's gravity. It is today made up mainly of nitrogen (78.1%). It also has plentiful oxygen (20.9%) and small amounts of argon (0.9%), carbon dioxide (~ 0.035%), water vapor, and other gases.
simple.wikipedia.org/wiki/Atmosphere_of_Earth Atmosphere - Wikipedia
Atmospheres are clouds of gas bound to and engulfing an astronomical focal point of sufficiently dominating mass, adding to its mass, possibly escaping from it or collapsing into it.
Atmospheric methane - Wikipedia
Methane (CH 4) concentrations in the atmosphere measured by the Advanced Global Atmospheric Gases Experiment (AGAGE) in the lower atmosphere (troposphere) at stations around the world.Values are given as pollution free …
Atmosphere of Earth - Simple English Wikipedia, the free …
It is held in place by Earth's gravity. It is today made up mainly of nitrogen (78.1%). It also has plentiful oxygen (20.9%) and small amounts of argon (0.9%), carbon dioxide (~ 0.035%), water …
Atmosphere - Simple English Wikipedia, the free encyclopedia
- Originally, the Earth's atmosphere had almost no free oxygen. 1. The first atmosphere consisted of gases in the solar nebula, mainly hydrogen. There might also have been simple hydrides such as those now found in the gas giants (Jupiter and Saturn): water vapor, methane and ammonia. 2. The atmosphere gradually changed to mostly carbon dioxide and n...
What Is… Earth’s Atmosphere? - NASA
May 13, 2024 · That is essentially what the Earth’s atmosphere is like: layers upon layers of gas surrounding the Earth, working to protect the planet. We asked Rei Ueyama , an atmospheric …
Earth’s Atmosphere Composition: Nitrogen, Oxygen, …
From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO2 and trace gases. Water vapor is excluded from this total.
Greenhouse gas - Wikipedia
Greenhouse gases (GHGs) are the gases in the atmosphere that raise the surface temperature of planets such as the Earth. What distinguishes them from other gases is that they absorb the wavelengths of radiation that a planet …
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. The atmospheric gases of steady …
Atmosphere | Definition, Layers, & Facts | Britannica
4 days ago · Atmosphere, the gas and aerosol envelope that extends from the ocean, land, and ice-covered surface of a planet outward into space. The density of the atmosphere decreases outward, because the planet’s gravitational …
3.1: Structure and Composition of the Atmosphere
Jan 21, 2023 · The atmospheric gases fall into three abundance categories: major, minor, and trace. Nitrogen, the most abundant component, has accumulated over time as a result of its …
What Is the Atmosphere? - Center for Science Education
The atmosphere is a mixture of gases that surrounds the Earth. It helps make life possible by providing us with air to breathe, shielding us from harmful ultraviolet (UV) radiation coming …
Atmospheric chemistry - Wikipedia
Atmospheric chemistry is a multidisciplinary field with wide-ranging applications that influence environmental policy, human health, technology development, and climate science. Examples …
Earth - Atmosphere, Climate, Ozone | Britannica
2 days ago · Earth is surrounded by a relatively thin atmosphere (commonly called air) consisting of a mixture of gases, primarily molecular nitrogen (78 percent) and molecular oxygen (21 …
Earth’s atmosphere - Met Office
Air is made up of a mixture of different gases. The principal constituents of Earth’s atmosphere are: Nitrogen – about 78% of the atmosphere; Oxygen – about 21%; Argon – about 1%; As …
Carbon dioxide - Wikipedia
Carbon dioxide is a chemical compound with the chemical formula CO 2.It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It …
What is the greenhouse effect? - NASA Science
The greenhouse effect is the process through which heat is trapped near Earth's surface by substances known as 'greenhouse gases.' Imagine these gases as a cozy blanket enveloping …
Atmospheric carbon cycle - Wikipedia
The atmospheric carbon cycle accounts for the exchange of gaseous carbon compounds, primarily carbon dioxide (CO 2), between Earth's atmosphere, the oceans, and the terrestrial …
Atmosphere of Earth - Wikiwand
The atmosphere of Earth is composed of a layer of gas mixture that surrounds the Earth 's planetary surface (both lands and oceans), known collectively as air, with variable quantities of …
Greenhouse effect - Wikipedia
A greenhouse gas (GHG) is a gas which contributes to the trapping of heat by impeding the flow of longwave radiation out of a planet's atmosphere. Greenhouse gases contribute most of the …
Methane - Wikipedia
Methane (US: / ˈ m ɛ θ eɪ n / METH-ayn, UK: / ˈ m iː θ eɪ n / MEE-thayn) is a chemical compound with the chemical formula CH 4 (one carbon atom bonded to four hydrogen atoms). It is a …
Greenhouse gas emissions - Wikipedia
Greenhouse gas emissions per person in the highest-emitting countries. [1] Areas of rectangles represent total emissions for each country. Greenhouse gas (GHG) emissions from human …
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