Biosentients - Science Biology… etc

After 12 years, an experiment focused on forest growth and climate change comes to an end, and scientists at Oak Ridge National Laboratory are eager to collect and analyze data to see if their predictions match results. With the Department of Energy-sponsored free air carbon dioxide enrichment experiment, known as FACE, three plots of sweetgum trees were the control sites and two plots of sweetgums were exposed to increased carbon dioxide levels in the atmosphere at 550 parts per million, the concentration that is projected to occur in about 2050 if current trends continue. The atmospheric carbon dioxide concentration has been rising steadily because of the burning of fossil fuels and global land use change........