Why is the solution to pollution not always dilution?
A) Liquid pollutants cannot be dissolved in water.
B) Some pollutants cannot be dissolved in any solvent.
C) Some pollutants are toxic at such low concentrations that they cannot be practically diluted.
D) Water itself is a pollutant.
C
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What primary product is formed during nitrogen fixation?
a. Urea b. Carbon dioxide c. Oxygen d. Glucose e. Ammonium
Which of the following observations lends itself best to scientific experimentation?
A) Archaeopteryx had a dinosaur-like skeleton but also had feathers. B) Male house finches seem to sing more when there is a female house finch around than when they are alone. C) My sister does not drive very well. D) Someone egged my house last night.
Is China's control over Tibet a legitimate concern of U.S. foreign policy? Should the United States attempt to influence Chinese policy in the area?
What will be an ideal response?
The great circulations in the ocean basins occur around the ________ pressure systems and are known as ________
A) subpolar low; gyres B) subtropical high; ocean streams C) subpolar low; ocean streams D) subtropical high; gyres