Select the correct answer from each drop-down menu. Per capita GDP of a country is the
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For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

Explain why ecosystem diversity results in species diversity in a healthy biosphere

If there are 350 trout found in 200 square feet of a pond measuring 1000 square feet what is the estimated trout population of the pond? a. 1350 b. 1550 c. 1750 d. 2000