Which of the following is evidence of recent changes in polar regions?
A) Ice sheet darkening
B) Increase in meltponds
C) The breakup of ice shelves
D) Decrease in Arctic sea-ice volume
E) Decrease in sea ice volume, ice sheet darkening, increased meltponds, and ice shelves calving are all evidence of recent changes in polar regions.
E
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Which of the following statements is FALSE regarding the tropical rain forest?
A) It is dominated by just a few different species of trees. B) The trees of the tropical rain forest are broadleaf evergreens. C) Plant foliage is relatively sparse on the forest floor. D) It has different vegetation patterns than the jungle.
Which horizons make up the solum?
A) C horizon B) O and A horizons C) E, B, and C horizons D) O, A, E, and B horizons
Which of the following alcohols has the highest boiling point?
A) 1-pentanol B) 1,5-pentanediol C) 1,3,5-pentanetriol D) 1-butanol
As ecological development proceeds, a biological community
A. Becomes less complex B. Goes through repeated primary succession stages C. Gradually stagnates D. Goes through repeated secondary succession stages E. Becomes more diverse