Background: Current Situation : Currently the heating effect of extra greenhouse gases (since the start of the industrial revolution) is equal to about . Thus the recent period has recorded parallel increases in concentration of carbon dioxide and average global temperature. As more greenhouse gases are put into the atmosphere the temperature will increase further. There are certain effects of a warmer Earth (discussed more in optional section), which could accelerate the process, even if no more greenhouse gases are put into the atmosphere (an unlikely prospect for the foreseeable future).

Situation: Last week, an exact clone of Earth appeared next to our current Earth. Scientists have come to call this new planet, Terra. Terra has the exact same cities, civilizations and history as Earth. Scientists are completely baffled as to how this planet exists, but it undeniably does. The only difference between Earth and Terra is that the citizens of Terra output half as many greenhouse gases into the atmosphere as citizens of Earth do.

Question: Which planet will have a higher average temperature?
Answer: Earth

Situation: Last week, an exact clone of Earth appeared next to our current Earth. Scientists have come to call this new planet, Terra. Terra has the exact same cities, civilizations and history as Earth. Scientists are completely baffled as to how this planet exists, but it undeniably does. The only difference between Earth and Terra is that the citizens of Terra output half as many greenhouse gases into the atmosphere as citizens of Earth do.

Question: Which planet will have a lower average temperature?
Answer: Terra

Situation: Last week, an exact clone of Earth appeared next to our current Earth. Scientists have come to call this new planet, Terra. Terra has the exact same cities, civilizations and history as Earth. Scientists are completely baffled as to how this planet exists, but it undeniably does. The only difference between Earth and Terra is that the citizens of Terra output half as many greenhouse gases into the atmosphere as citizens of Earth do.

Question: Does Earth have more or less concentration of carbon dioxide than Terra?
Answer: more

Situation: Last week, an exact clone of Earth appeared next to our current Earth. Scientists have come to call this new planet, Terra. Terra has the exact same cities, civilizations and history as Earth. Scientists are completely baffled as to how this planet exists, but it undeniably does. The only difference between Earth and Terra is that the citizens of Terra output half as many greenhouse gases into the atmosphere as citizens of Earth do.

Question: Does Terra have more or less concentration of carbon dioxide than Earth?
Answer: less

Situation: There is a local election in Troy's city and he is researching the two candidates running for mayor. Troy is a strong environmentalist who believes, above all else, that taking care of the Earth is the number one priority in anything. In his research he decides to read the environmental proposals of each candidate. Mark Hampton, one candidate, has a proposal that he says will strongly boost the city's economy by opening more industrial factories, but these will increase the carbon dioxide put into the atmosphere. Jeffrey Lindell, the other candidate, says that he wants to begin implementing solar panel farms to generate electricity to cut down on the carbon emissions the city produces.

Question: Which candidate's proposal will cause an increase in global temperature?
Answer: Mark Hampton

Situation: There is a local election in Troy's city and he is researching the two candidates running for mayor. Troy is a strong environmentalist who believes, above all else, that taking care of the Earth is the number one priority in anything. In his research he decides to read the environmental proposals of each candidate. Mark Hampton, one candidate, has a proposal that he says will strongly boost the city's economy by opening more industrial factories, but these will increase the carbon dioxide put into the atmosphere. Jeffrey Lindell, the other candidate, says that he wants to begin implementing solar panel farms to generate electricity to cut down on the carbon emissions the city produces.

Question: Which candidate's proposal will cause a decrease in global temperature?
Answer: Jeffrey Lindell

Situation: There is a local election in Troy's city and he is researching the two candidates running for mayor. Troy is a strong environmentalist who believes, above all else, that taking care of the Earth is the number one priority in anything. In his research he decides to read the environmental proposals of each candidate. Mark Hampton, one candidate, has a proposal that he says will strongly boost the city's economy by opening more industrial factories, but these will increase the carbon dioxide put into the atmosphere. Jeffrey Lindell, the other candidate, says that he wants to begin implementing solar panel farms to generate electricity to cut down on the carbon emissions the city produces.

Question: Which candidate is Troy more likely to vote for?
Answer: Jeffrey Lindell

Situation: There is a local election in Troy's city and he is researching the two candidates running for mayor. Troy is a strong environmentalist who believes, above all else, that taking care of the Earth is the number one priority in anything. In his research he decides to read the environmental proposals of each candidate. Mark Hampton, one candidate, has a proposal that he says will strongly boost the city's economy by opening more industrial factories, but these will increase the carbon dioxide put into the atmosphere. Jeffrey Lindell, the other candidate, says that he wants to begin implementing solar panel farms to generate electricity to cut down on the carbon emissions the city produces.

Question: Which candidate is Troy less likely to vote for?
Answer: Mark Hampton