In a tropical rain forest, dropped leaves, fallen trees, and dead animals decompose ____.
A. quickly due to the abundance of decomposers
B. slowly due to the nutrient-poor soils
C. slowly due to the abundant rainfall
D. moderately and nutrients are taken up by the roots of the lianas
E. quickly due to the dense ground vegetation
Answer: A
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The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground as others. These twice-as-high apples, for the same mass, have
A) one-quarter the weight. B) one-half the weight. C) practically the same weight.
Which activity or event illustrates natural capital degradation?
A. use of wind power B. saving endangered species C. cleaning up pollution D. aquifer depletion E. water runoff
Choline is converted to acetylcholine by which of the following reactions?
A) condensation B) reduction C) oxidation D) substitution
Which factor(s) weakened the Commonwealth of Independent States?
A) Ukraine's departure B) Eastern Europe's expansion to NATO C) annexation of Crimea D) all of the above E) none of the above