Question

Planet-wide, humans are adding about 40 billion metric tons of CO2 to the atmosphere every year. The USA’s contribution to this is about 6 billion metric tons of CO2 per year. This is about half that of China (although China has 4 times the population, so the US emissions per person are twice that of China’s) a. If we take the US population to be 333 million people, how many metric tons is the average person in the US responsible for emitting per year? (Round off to the nearest metric ton.) _ metric tons b. An average wind turbine (1.82 MW) offsets 3700 metric tons of carbon dioxide every year. There are approximately 70,000 wind turbines in the USA currently. How many wind turbines would be needed to offset 100% of the US emissions? (We're looking for the total number, including what already exists.) _ wind turbines

          Planet-wide, humans are adding about 40 billion metric tons of CO2 to the atmosphere every year. The USA’s contribution to this is about 6 billion metric tons of CO2 per year.  This is about half  that of China (although China has 4 times the population, so the US emissions per person are twice that of China’s)
a. If we take the US population to be 333 million people, how many metric tons is the average person in the US responsible for emitting per year? (Round off to the nearest metric ton.)
_______ metric tons
b. An average wind turbine (1.82 MW) offsets 3700 metric tons of carbon dioxide every year. There are approximately 70,000 wind turbines in the USA currently. How many wind turbines would be needed to offset 100% of the US emissions? (We're looking for the total number, including what already exists.)
_______ wind turbines

Added by Frank E.

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