Which of the following statements is FALSE?
o The worst-case scenario predicts that if global warming continues at its present rate, by 2050 the average annual temperature will have increased 1.5 - 2 deg C
o Carbon-dioxide concentration of the atmosphere has increased in the last century.
o The Intergovernmental Panel on Climate Change (IPCC) has ruled that all future research use the one computer climate model they have concluded is the best.
o Few climate scientists believe current temperature increases are entirely due to natural cycles of short-term climate change.