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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 emits, resulting in the greenhouse effect. [1]
Gas. Drifting smoke particles indicate the movement of the surrounding gas. Gas is one of the four fundamental states of matter. The others are solid, liquid, and plasma. [1] A pure gas may be made up of individual atoms (e.g. a noble gas like neon ), elemental molecules made from one type of atom (e.g. oxygen ), or compound molecules made from ...
Definition. The greenhouse effect on Earth is defined as: "The infrared radiative effect of all infrared absorbing constituents in the atmosphere. Greenhouse gases (GHGs), clouds, and some aerosols absorb terrestrial radiation emitted by the Earth’s surface and elsewhere in the atmosphere." [ 15]: 2232.
The Moon is visible in the background. An atmosphere (from Ancient Greek ἀτμός (atmós) 'vapour, steam' and σφαῖρα (sphaîra) 'sphere') [1] is a layer of gasses that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the ...
The term inert gas is context-dependent because several of the noble gases can be made to react under certain conditions. Helium, Neon, Argon, Krypton, Xenon, Radon are the six inert ( noble ) gases. Purified argon gas is the most commonly used inert gas due to its high natural abundance (78.3% N 2, 1% Ar in air [2]) and low relative cost.
Global net zero emissions describes the state where emissions of greenhouse gases due to human activities, and removals of these gases, are in balance over a given period. It is often called simply net zero. [ 2] In some cases, emissions refers to emissions of all greenhouse gases, and in others it refers only to emissions of carbon dioxide (CO ...
e. Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [1] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological ...
More than 75% of proposed CCS installations for natural-gas processing have been implemented. [ 1] Carbon capture and storage ( CCS) is a process in which a relatively pure stream of carbon dioxide (CO 2) from industrial sources is separated, treated and transported to a long-term storage location. [ 2]: 2221 In CCS, the CO 2 is captured from a ...