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Biology 7 Online
OpenStudy (ajr262636):

6. A major factor that negatively affect biodiversity is A) Biological magnification. B) Habitat fragmentation. C) Contour plowing. D) Nonrenewable recourses. 7. During a controlled experiment, a scientist isolates and tests A) A conclusion. B) A mass of information. C) A control group. D) A single variable.

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