Suppose that the concentration of DDT in a lake is 0.0000003 ppm (parts per million) and the concentration of DDT in the tissues of an osprey (a fish-eating bird) is 25 ppm. This is an example of ________
A) biodegradation
B) biotruncation
C) biomagnification
D) bioreduction
E) bioremediation
C
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Which of the features below was the first to appear in hominids?
A) a large brain B) tool-making C) language D) an upright posture
How does the UN measure gender inequity? Explain why this is a useful metric for social development
What will be an ideal response?
Using the GINI index, more than any other high-income country, the United States has
A) the lowest life expectancies and more children in poverty. B) more people in prison and fewer children in poverty. C) the highest life expectancies, fewer people in prison, and more children in poverty. D) the lowest life expectancies, more people in prison, and more children in poverty.
The best way for us to be more efficient and to decrease our impact on natural resources is to
A. Make sure we don't litter and to recycle our paper and plastics B. Reuse manufactured items such as shopping bags or clothing C. Consume less energy and materials in the first place D. Sort all recyclable materials before disposal E. Export more materials than we import