• Photosynthesis is the process by which green plants manufacture their own organic food. The process may be summarized as follows:
6H2O 6CO2 Light Energy, enzymes ÷ Chlorophyll C6H12O6 + 6O2
• Photosynthesis is the only process that can utilize the Sun's energy to manufacture food, thus making green plants the main food producers (directly or indirectly) for all other living organisms.
• Green plants must absorb nitrates and other mineral salts and other mineral salts from the soil in order to make proteins and other substances that they need for healthy growth.
• In nature, nitrogen is constantly being removed from the soil and returned to its via the nitrogen cycle. Micro organisms plays an important role in converting atmospheric nitrogen as well as decomposing organic nitrogenous compounds in to nitrates.
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