Competitive exclusion is not as common as many biologists expected, in large part because
A) there just are not that many species of organisms on Earth.
B) ecosystems are more homogeneous than was appreciated.
C) even when two species share an identical niche, they find a way to cooperate.
D) subtly heterogeneous environments allow apparent competitors to occupy separate niches.
D
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Food shortages that lead to extensive starvation in a population are known as ________
Fill in the blank(s) with the appropriate word(s).
What is the difference between a barrier reef and an atoll?
a) Barrier reefs surround an inactive volcano emerging above sea level, while atolls surround the previous location of a submerged volcano. b) Atolls surround an inactive volcano emerging above sea level, while barrier reefs surround the previous location of a submerged volcano. c) Barrier reefs surround an active volcano emerging above sea level, while atolls surround the previous location of a submerged volcano. d) Atolls surround an active volcano emerging above sea level, while barrier reefs surround the previous location of a submerged volcano.
Your environmental science instructor tells your class that you will have an extra credit question on your next exam based on a talk to be given by a scholar visiting campus to present his research on alternative energy sources
The night before the talk, you pull an all-nighter writing a research report. You attend the talk but immediately doze off. Afterward, all you remember about the talk is that the speaker said something about working with turbines. On your next environmental science exam, your instructor asks you about the focus of the speaker's research, with the following answer choices. Which one is most likely to be the correct answer? A) Photovoltaic systems B) Geothermal heat pumps C) Biodiesel production D) Concentrated solar thermal systems
The ocean ridge systems that make up the major divergent plate boundaries are a source of frequent large earthquakes and tsunamis
Indicate whether the statement is true or false