Image: Auto-and heterotrophs

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Description: Cycle between autotrophs and heterotrophs. Autotrophs can use carbon dioxide (CO2) and water to form oxygen and complex organic compounds, mainly through the process of photosynthesis. All organisms can use such compounds to again form CO2 and water through cellular respiration.
Author: Mikael Häggström
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes

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Water

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