Discussions of global warming often focus on the spiking atmospheric concentrations of which gas?

Gases that absorb heat energy, thus increasing the average temperature on Earth, are called ___

What do chemists call "organic carbon", which is nature's equivalent of a battery?

Which element is foremost in the transfer of energy between organisms and trapping heat in our atmosphere?

Which square on the periodic table does carbon occupy?

Plants use the carbon in atmospheric CO₂ to make ___

What process is used by green plants to convert light energy into chemical energy?

The conversion of carbon dioxide into solid organic compounds by living organisms is called ___

In the chemical equation for photosynthesis, CH₂O is a reduced formula that stands for ___

The equation for photosynthesis is most often written with which simple sugar?

During photosynthesis, carbon is reduced, going from an oxidation number of plus four to ___

Which process has a chemical equation that is essentially the reverse of carbon fixation?

CO₂ is released as a direct product of cellular respiration: for you and me that happens mostly when we ___

No matter how it gets there, carbon dioxide reacts with water to form ___

Marine animals use carbonate ions to build their shells and skeletons in the form of ___

What percentage of all the carbon on the planet is locked up as inorganic carbonates, in rocks like limestone?

What percentage of all the carbon on the planet is stored in fossil fuels?

What is the general term for carbon deposits from the dead bodies of organisms like plants and animals?

What are the products of the combustion of fossil fuels?

A mole of octane is only about 0.15 liters but, when combusted, produces 8 moles of CO₂ which takes up ___

Excess carbon dioxide remains in the atmosphere trapping the Sun's heat and causing temperatures to ___