Which one of the following statements accurately reflects the nature of mature communities?
A) Mature communities have more consumers than producers, because the producers are so efficient.
B) Mature communities develop very quickly.
C) Succession begins once a mature community has been established.
D) Mature communities are so well established that when disturbed, they quickly recover.
E) Mature communities are the most efficient in terms of energy utilization and exhibit the greatest species diversity.
E
You might also like to view...
Behavioral responses that animals may or may not use are called facultative
Indicate whether the statement is true or false.
Nerve fibers that are larger in diameter and heavily myelinated (A? fibers) will depolarize before smaller, unmyelinated nerve fibers (C fibers). Which of the following would you expect to occur first when applying electrical stimulation to a muscle with a high frequency (100 Hz), but low pulse duration (100 µs)?
a. Intermittent muscle contraction (unfused tetanus) b. Consistent muscle contraction (fused tetanus) c. "Pins and needles" sensation d. Pain
Viruses can be harmless or even beneficial.
a. true b. false
A trend first observed in the evolution of the earliest tetrapods was _____
A) the appearance of jaws B) feet with digits C) the mineralization of the endoskeleton D) the amniotic egg