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Question 9 (2 points)

The four major biogeochemical cycles are the carbon cycle, the water cycle, the
____ and the _____. Fill in the blanks

User Roey
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2 Answers

4 votes

Answer:

Nitrogen and the Oxygen cycle :)

Step-by-step explanation:

User Christian Nilsson
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Nitrogen cycle and the oxygen cycle
User Sunshinekitty
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