The Scientist Finds That the Heavy Metal Concentration in the Insect-Eating

question 12

Multiple Choice

The scientist finds that the heavy metal concentration in the insect-eating birds of a fragment does not depend on the relative amount of edge habitat of that fragment.Which of the following describes how experimental error may have influenced the results?

• A)The density of birds is higher in edge habitat compared to the density in interior habitat.
• B)The forest fragments studied were too small,and there was no true interior habitat.
• C)The insects eaten by both edge and interior birds do not differ in heavy metal concentration.
• D)Heavy metals deposited from atmospheric pollution are equal across the landscape.

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