according – adj. as stated by or in

Celsius – adj. relating to or having a scale for measuring temperature on which the boiling point of water is at 100 degrees and the freezing point of water is at 0 degrees

carbon dioxide – n. a gas that is produced when people and animals breathe out or when certain fuels are burned and that is used by plants for energy

greenhouse gases – n. gases that trap heat in the atmosphere, which makes the Earth warmer