Biologists have catalogued all the species on earth, except for a few rare species in remote tropical areas.
a. true
b. false
Ans: b. false
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What is the name for an association of fish that exhibit behaviors for social reasons?
a. Synchronization b. Shoaling c. Catadromous d. Anadromous
An ecologist samples the abundance of various species along an environmental gradient and fails to find clusters of species. Instead, peaks of abundance of dominant species are merely randomly spaced segments along a continuum
This distribution of species supports the A) unified concept of a community. B) organismic concept of a community. C) individualistic or continuum concept of a community. D) successional concept of a community.
Probable factors that affect the passage of materials across cell membranes include all of the following except ____________.
a. concentration b. size c. color d. charge
When you look at the spacing of humans on a global level, what type of distribution does the population follow?
A) clumped B) uniform C) random D) indescribable