Which of the following is true of tree plantations?
A. They are not biologically diverse.
B. They take a very long time to return a profit.
C. They are usually clear-cut before they are sufficiently mature.
D. They cannot be used for paper products.
E. They contain trees that are not of a uniformly age.
Answer: A
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Given the three compounds (i) acetic acid (ii) hydroxyacetone (iii) methyl formate Which are constitutional isomers of one another?
A) only (i) and (ii) B) only (i) and (iii) C) only (ii) and (iii) D) They are all constitutional isomers of one another.
In 2013, what country held trials for human rights violations under the dictator Rios Montt?
A) Argentina B) Guatemala C) Brazil D) Chile E) Bolivia
Earthquakes along the San Andreas fault zone, for example, are repetitive—they reoccur in roughly the same regions over and over again—separated by decades or centuries because ________
A) plate boundaries move at regular rates so the interactions across plate boundaries are predictable and regular B) stress continues to build up all the time and when it is great enough to overcome friction there will be an earthquake and then the process will start over again C) there are areas that are weak and always break when small amounts of energy are applied to them D) faults are always moving or creeping so an earthquake will occur whenever two sides meet that have the right properties for an earthquake
Seasonal outlooks
A) are not considered true long-range forecasts. B) predict conditions for individual days. C) always give a definite prediction. D) have three main categories of classification.