Aquatic animals such as fish and frogs are especially good indicators of water pollution because ________
A) all chemical toxicants are found in water
B) these organisms are the most abundant on Earth
C) they are easy to catch
D) the metabolism of these organisms is most like ours
E) most chemicals are water soluble so they enter these organisms through drinking or skin absorption
E
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Regional large scale storms where winds converge on areas of low pressure are
A) tornados. B) fronts. C) cyclones. D) hurricanes.
What texture is displayed by the igneous rock in this photograph?
A. breccia B. porphyritic C. glassy D. vesicles E. None of these choices are correct.
Costs of pollution control tend to
A) decrease over time because of initial investments in reductions and new technologies. B) decrease over time because regulations generally become less restrictive. C) increase over time as levels of acceptable pollution become increasingly restrictive. D) increase over time as new technologies require renewed investments.
Frozen precipitation that has concentric accreted shells is termed ____________________
Fill in the blank(s) with correct word