A) None of the answers listed B) Fuel+Oxygen =Catalyst +CO2+Water Vapor C) Fuel+Oxygen = Light+Heat D) Light+Heat+Fuel= Water Vapor+CO2+Catalyst E) Fuel+Oxygen= Light+Heat+Carbon Dioxide+ Water Vapor
A) Tim Tebow B) Carbon Sinks C) The combustion of fossil fuels D) Allowing trees to grow to maturity E) The discovery of fossil fuels
A) It is a reason that the carbon cycle is out of balance. B) It shows a way to store carbon C) It is a carbon sink D) None of the answers listed E) It shows atmospheric Carbon Dioxide
A) Only stored in fossil fuels B) In the water molecules within our oceans. C) Usually just in trees D) Inside all living things E) Only in the Earth's Atmosphere
A) False B) True
A) That cycle's crazy. Terrible. Knucklehead. B) Both involve the transfer of materials between animals, plants and the earth C) Both cycles stop working below freezing D) Both involve the transfer of materials exclusively between plants and animals E) Both involve liquid substances falling out out of the atmosphere to the Earth.
A) Wood produces twice as much CO2 than propane per unit burned. B) Propane Propane Gas Combustion (Ethane) C3H8 + 5O2 = 3 CO2 creates fewer units of CO2 per unit of fuel combusted than paraffin Paraffin: (used in modern candles) C25H52 + 38 O2 = 25 CO2 + 26 H2O C) Each fuel produces water vapor. D) Because propane comes from carbon that has been stored for millions of years, it is generally considered to be a fuel that is better at balancing the carbon cycle. E) Because the trees that wood comes from are a more active part of the carbon cycle, carbon dioxide created from the combustion of wood would be less likely to contribute to long term climate change.
A) Something that adds carbon to the Earth's crust B) Something that adds carbon to the atmosphere. C) None of the answers listed. D) Something that removes carbon from the Earth's atmosphere E) Something that removes carbon from the Earth's crust.
A) Coal and oil produce the same amount of water vapor through combustion B) Paraffin has the second greatest amount of Carbon in its formula C) While coal has the greatest amount of carbon in its formula, wood produces more CO2 through combustion D) Propane produces less Carbon Dioxide than Natural Gas/Methane when combusted E) Propane and methane produce the same amount of C02 through combustion.
A) The Industrial Revolution B) The Gulf War C) Super Bowl XLVI D) The American Revolution E) The Civil War
A) All rocks absorb C02 over time B) The carbon rich bodies of animals and plants put carbon back into the Earth after they die and become buried. C) Tree roots put carbon dioxide back into the soil D) Humans pump large amounts of C02 into large underground storage tanks called carbon sinks E) None of the answers listed. |