A. Plastic six-pack holder
B. Hard plastic container
C. Disposable diaper
Answer: A -- A plastic six-pack holder takes 450 years to disintegrate. Consider the impact of plastic water bottles, which take as long to biodegrade. The International Bottled Water Association says that in the top 10 global markets alone, people consumed more than 61 billion gallons of bottled water in 2011.
8. Which of the following accounts for the greatest percentage of total waste in the United States?
Answer: A -- Paper is by far the No. 1 item Americans dispose of. But it is also the most recycled material.
9. How much solid waste does the United States produce in one year?
A. 50 million tons
B. 150 million tons
C. 250 million tons
Answer: C -- 250 million tons, says the EPA. That's more than 1,000 times greater than one of the largest cruise ships in the world.
10. Which of the following countries had higher emissions of the greenhouse gas carbon dioxide, per capita, in 2008 than the other two?
A. United States
C -- Australia emitted 26.08 tons of carbon dioxide per person in 2008. For comparison's sake, a full tanker truck can weigh between 12 and 25 tons. U.S. and Russian per-person emissions that year were 22 and 15 tons, respectively.