- published: 24 Jun 2015
- views: 1354118
Carbon dioxide (chemical formula CO2) is a colorless and odorless gas vital to life on Earth. This naturally occurring chemical compound is composed of a carbon atom covalently double bonded to two oxygen atoms. Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about 0.04 percent (400 ppm) by volume. Natural sources include volcanoes, hot springs and geysers and it is freed from carbonate rocks by dissolution in water and acids. Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, in ice caps and glaciers and also in seawater. It is present in deposits of petroleum and natural gas.
Atmospheric carbon dioxide is the primary source of carbon in life on Earth and its concentration in Earth's pre-industrial atmosphere since late in the Precambrian was regulated by photosynthetic organisms and geological phenomena. As part of the carbon cycle, plants, algae, and cyanobacteria use light energy to photosynthesize carbohydrate from carbon dioxide and water, with oxygen produced as a waste product.
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5 miles up the ocean
Headin‘ way back home
Struggling with that seatbelt
In sleep she is gone
Shapes foam around us
From moon to the sun
High, feeling lucky
Now I'm not on the run
We gotta burn that gas
Hope we won't touch the sea
Come on, make it fast
Set me free
Just find my sleep
In a day that‘s gone
Time makes the distance
A frozen world beneath the sun
Won't I remember
How far I'd come
Won't I remember
Now I'm not on the run
We gotta burn that grass
Hope there's no lack of weed
Come on roll it fast