Question:
To determine how changing CO2 concentration affect flowing plants
A. Background:
1. General:Influence of climate change
(a) Gas composition of air in past (Liu and Froschauer 1,p.80;Dohler et al .,2005)
(b) Gas composition of air has changed due to increasing temperature of atmosphere(Peters et al.,1990)
(i). O2 concentration has decreased due to climate change (Joh et al ., 1999)
(ii). CO2 concentration has increased due to climate change (Kim et al.,2000)
2. Specific reported data:Changing O2 and CO2 concentration affects plant populations(Honeck et al.,2003)
(a) Maple fertilitydecreases with decreasing O2 concentration (Weinberger&Shewitz,2000a)
(b) Maize growth rate andsize increases with increasing CO2 concentrations (Herbert et al.,2002)
B. Unknown/Problem:
Not know how increasing CO2 concentrations affectthe growth of flowering Plants
C. Research Purpose/Question:
To determine how changing CO2 concentration affect flowering plants
D. Experimental Approach:
We observed and evaluated the growth rate and size of six different flowering plant species under various CO2 concentrations.