| carbon dioxide |
a greenhouse gas whose atmospheric concentrations have been increasing from pre-industrial (1750-1800) levels of 280 parts per million (ppm) to present day levels of 356-360 ppm, depending on location. CO2 decreases in summertime when plant productivity consumes CO2 and increases in winter when biota are less active and respiration exceeds photosynthesis. A main source of CO2 increase in the atmosphere has been the burning of fossil fuels.
출처: www.pbs.org/strangedays/glossary/C.html
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| carbon dioxide |
A gas created during metabolism, when the cells use oxygen to burn fat and release energy. The lungs release it when you breathe out.
출처: www.clevelandclinic.org/heartcenter/pub/glossary/c...
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| carbon dioxide |
A colorless, odorless, nonpoisonous gas (chemical symbol CO2) found in the air in small amounts. Humans exhale it, and trees and other plants absorb it and use it to make food. Cutting down trees or burning fossil fuels, such as oil and coal, increases carbon dioxide in the atmosphere. It is a greenhouse gas that contributes to global warming, which, in turn, affects human health. It also creates the bubbles that are found in soda and other carbonated drinks.
출처: www.ecohealth101.org/glossary.html
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| carbon dioxide |
Carbon dioxide is the main greenhouse gas created by combustion, the so-called greenhouse effect, emitted primarily from human activity such as burning of fossil fuels to generate electricity and vehicles. Scientists believe these greenhouse gases are causing the earth's climate to change.
출처: www.bbc.co.uk/info/environment/2002/glossary.shtml
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| carbon dioxide laser |
also known as a CO2 laser, these are commonly used to perform skin resurfacing
출처: www.hairfacts.com/terms/termsc.html
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