Arctic ice cap melting

[buffycat]

The more correct phrasw would be, 'without the proper balance of, we would have no plant life' --- certainly too much CO2 will kill any advanced plant life more quickly than too little CO2

I think the balance would have to really drastically shift. CO2 enrichment is employed in greenhouses to encourage rapid and abundant vegetative growth. Plants get their needed Carbon from CO2 - less CO2 = less plants. Readings of 500 - 600 ppm CO2 in controlled environments are not unheard of, and work to raise yields:

" Colorado State University conducted tests with carnations and other flowers in controlled CO2 atmospheres ranging from 200 to 550 ppm. The higher CO2 concentrations significantly increased the rate of formation of dry plant matter, total flower yield and market value."

http://homeharvest.com/carbondioxideenrichment.htm

[Guthrie]

The more correct phrasw would be, 'without the proper balance of, we would have no plant life' --- certainly too much CO2 will kill any advanced plant life more quickly than too little CO2

I think the balance would have to really drastically shift. CO2 enrichment is employed in greenhouses to encourage rapid and abundant vegetative growth. Plants get their needed Carbon from CO2 - less CO2 = less plants. Readings of 500 - 600 ppm CO2 in controlled environments are not unheard of, and work to raise yields:

" Colorado State University conducted tests with carnations and other flowers in controlled CO2 atmospheres ranging from 200 to 550 ppm. The higher CO2 concentrations significantly increased the rate of formation of dry plant matter, total flower yield and market value."

http://homeharvest.com/carbondioxideenrichment.htm

it isn't the point - no one has yet suggested the planet is dying of CO2 poisoning -- but the part CO2 plays in melting ice and weather patten shifts is real, dangerous to the continuation of human life and answerable