Forests reach their greatest ecological complexity when ________
A) they are frequently burned
B) in the early stages of recovering from logging
C) they are frequently logged using clear-cutting
D) they are mature and exhibit a multi-level canopy
E) shrubs and other ground cover plants are absent
D
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Which is TRUE regarding the fourth stage of demographic transition?
A) Death rates reach zero. B) Birth rates are the lowest in this stage. C) Economic development suffers. D) Families grow larger, a trend that continues for a half century. E) Plagues and famines become common in countries that are not ready for the fourth stage.
Where are most people located when they are killed by hurricanes?
A. in the open B. in their homes C. in their cars
Briefly describe why the Sun's influence on Earth's tides is only 46% that of the Moon, even though the Sun is much more massive that the Moon
What will be an ideal response?
Zooplankton are plants that live attached to the ocean bottom. Indicate whether the statement is true or false