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Middle Grades General Science 5 to 9

Question 21 of 30

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Competency 7—Knowledge of the effects of physical and biological factors on the environment

DIRECTIONS: Read the question and select the best response.

Which of the following biogeochemical cycles depends on a symbiotic relationship between two species?

Choose an answer

water
phosphorus
carbon
nitrogen

Enter to expand or collapse answer.Answer expanded: Correct Response: D.