During the first 20 years of recycling (from 1960 to 1980), the average annual increase in recycling was approximately ________.
A) 80 million tons/year
B) 1 million tons/year
C) 20 million tons/year
D) 10 million tons/year
E) 8.0 million tons/year
Question 2
Conservation biologists define a region as a biodiversity hotspot if ________.
A) there is an endemic species protected by a captive breeding program
B) species richness is unusually high and protection is required
C) there is an unusually large number of endemic species threatened by humans
D) there is an unusually large number of endemic species thriving
E) there is at least one umbrella species to be protected
Defying thousands of years of conventional wisdom, scientists are reporting that it is possible for
Abundant cave art after about 30,000 years ago is evidence of the importance of symbolic behavior fo
Many diesel fuel additives increase the cetane rating which results in improved fuel economy.
Climate change occurs over millions of years
The level of emissions from transport in the United States is twice as high as the global average
In 2000, the average charge of tax preparation was 95 . Assuming a normal distribution and a ...