One goal of conservation biology is to prevent extinction caused by
A) asteroid impacts.
B) predation.
C) human activity.
D) interaction of native species.
E) disease.
C
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Which one of the following traits would be found in a typical fern but not a moss?
A. homospory B. tracheids C. gametophytes with rhizoids D. antheridia E. a sporophyte generation
Finches having either a large bill or a small bill
but no sizes in between is an example of ____ selection(s).
a. stabilizing b. disruptive c. frequent d. directional e. mutational
The goal of restoration ecology is to
A) create the most functional ecosystem. B) improve productivity in an ecosystem. C) return the community to its pre-disturbance condition. D) restore the use of ecosystem services.
The ozone layer can be destroyed by pollutants such as
A) sulfur dioxide. B) CFCs. C) carbon monoxide. D) hydrocarbons and nitrogen oxides. E) carbon dioxide and oxygen.