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13. Which of the following is the source of energy for the water cycle? gravity winds volcanic eruptions the sun 14. Which of the following statements about the water cycle is true? Organisms in the biosphere do not influence the water cycle...

1. What role do producers play in the carbon cycle? They release carbon dioxide for photosynthesis. They use carbon dioxide during respiration. They release carbon dioxide during transpiration. They use carbon dioxide for photosynthesis. 2. Which of the following are...