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Politics : Manmade Global Warming, A hoax? A Scam? or a Doomsday Cult? -- Ignore unavailable to you. Want to Upgrade?

To: Jorj X Mckie who wrote (2368)	3/27/2011 11:51:35 PM
From: The Vet	2 Recommendations Read Replies (2) \| Respond to of 4326

Actually the article was correct.. Your statement " a few errors in that bit. One was that it says that plants expel CO2...actually, animals expel CO2, plants breathe it in." is true when taken over an extended period, but while plants take in CO2 and convert it to sugars during sunlight hours, the reverse happens at night and whenever there is insufficient sunlight energy to actually maintain photosynthesis. Plants produce more CO2 at night than all of the animals combined and that includes all that produced by human activities. Fortunately the conversion of CO2 back to sugars using photosynthesis in the sunlight hours exceeds the reverse process of respiration at night especially during summer so the levels of Oxygen are maintained and net CO2 remains in balance. In winter with shortened days and poor growing conditions most plants in cooler places do output more CO2 than they absorb over any given 24 hour period which explains the constant and significant season variations in CO2 concentrations in the published data. In addition almost all of the biomass generated by plants is broken down by bacteria and fungi which technically are plants and they use the carbohydrates for energy and excrete CO2 in the process and never actually absorb any CO2, so all plants are not equal in this process.