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Politics : Formerly About Advanced Micro Devices
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Brumar89
d[-_-]b
i-node
To: d[-_-]b who wrote (894164)10/16/2015 12:41:35 AM
From: FJB3 Recommendations  Read Replies (2) of 1576635
 
The following summarizes levels of CO2 under various conditions:

40,000 ppm: The exhaled breath of normal, healthy people.

8,000 ppm: CO2 standard for submarines

2,500 ppm: CO2 level in a small hot crowded bar in the city

2,000 ppm: The point at which my CO2 meter squawks by playing Fur Elise

1,000 to 2,000 ppm: Historical norms for the earth's atmosphere over the past 550 million years

1,000 to 2,000 ppm: The level of CO2 at which plant growers like to keep their greenhouses

1,000 ppm: Average level in a lecture hall filled with students

600 ppm: CO2 level in my office with me and my husband in it

490 ppm: CO2 level in my office working alone

390 ppm: Current average outdoor level of CO2 in the air

280 ppm: Pre-industrial levels in the air, on the edge of "CO2 famine" for plants

150 ppm: The point below which most plants die of CO2 starvation
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