Species that can survive on a wide variety of food are called ____
a. abiotic
b. heterotrophs
c. specialists
d. secondary producers
e. generalists
e
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Which of the following is not a principle of Ecosystem function?
A) Ecosystems are always open to gains and losses of matter and energy. B) Ecosystems have distinct boundaries that are influenced by the abiotic factors in the ecosystem. C) Ecosystem's processes are self-regulated by interactions among their living and nonliving components. D) Ecosystem change is inevitable and essential. E) Matter and energy are neither created nor destroyed.
The region of the atmosphere that is so evenly mixed that it behaves as if it were a single gas is the
A) homosphere. B) heterosphere. C) exosphere. D) thermosphere.
Where did the carbon dioxide and methane data in the SmartFigure come from?
What characteristics along a seacoast indicate that erosion predominates over deposition? What will be an ideal response?