What kind of plant has nitrogen-fixing bacteria living in their roots?
A. legumes
B. deciduous trees
C. ferns
D. mosses
Answer: A
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Remains or traces of prehistoric organisms preserved in rocks are ____
a. fossils b. evaporites c. formations d. natural selections e. minerals
An increase in the amount of which of these limiting factors will lead to population decline?
A. predators B. food C. water D. space
What geological feature is associated with the islands of Sumatra, Java, and the Lesser Sunda Islands?
A) volcanoes B) alpine valleys C) rift valleys D) karst topography E) glacial erosion
Refer to Figure 19.4. Which of the following conclusions cannot be made from the given information?
A) A duck on water will move slightly forward with each wave that passes. B) A duck will move up and down as waves move beneath it. C) The distance that a wave moves an object back and forth as it passes increases as the object gets closer to the bottom of the wave. D) Wave motion does not move water below the wave base.