This is believed to be one of the causes of global warming and climate change associated with it
A) the burning of fossil fuels
B) the use of radioactive elements for energy and as weapons
C) overuse of limited fresh water resources
D) the result of mass extinctions as human civilization spreads
E) changes in the Sun's energy
Answer: A
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The risk of death from an environmental hazard is calculated as the number of people who might die compared to the number exposed to the hazard. Which probability factor does the EPA to determine if the risk is acceptable?
A. 1 in a 1,000,000 B. 1 in 10,000 C. 1 in a 100 D. 1 in a 10,000,000
Cod landings from the Georges Bank of North America, according to 2013 data
A) have now bounced back to levels higher than 40 years ago. B) are about 50% of what they were 40 years ago. C) reveal the healthy sustainability of a well-managed fishery. D) are seriously depleted and need prolonged sustainable management practices.
Which Russian physiographic region is flat, contains extensive wetlands, and tens of thousands of small lakes?
A. Urals B. Central Siberian Plateau C. Russian Plain D. West Siberian Plain
The major acid resulting from these industrial sources is ________
A) sulfuric acid B) mercuric acid C) nitric acid D) tropospheric acid E) carbonic acid