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PHOTOSYNTHESIS Photosynthesis is the process in which producers and some bacteria make the food they need to survive This process is far more important than just making food for themselves it provides almost all the food needed for all living things above producers on the food chain Another important aspect of photosynthesis is that oxygen is a bi-product and oxygen to is needed for life to survive In the process of photosynthesis green plants and some organisms take light energy to combine carbon dioxide and water to make food The light used in photosynthesis is absorbed by a green pigment called chlorophyll The chlorophyll which is located in the chloroplasts of every food making cell of the a plant has an effect on the water The effect is that in chloroplast light energy causes water drawn from the soil to split into molecules of hydrogen and oxygen In a series of complex steps the hydrogen combines with carbon dioxide form the air forming a simple sugar From sugar with nitrogen sulfur and phosphorus from the soil- green plant can make starch fat protein vitamins and other complex compounds needed for life Plants are not the only ones that use photosynthesis to make their food There are a few organisms that are very unique Certain bacteria and algae can also capture light energy and use it to make food The first picture is just basic green algae The second picture is one of the oldest living organisms on earth it is called the cyanobacteria The cyanobacteria can live in snow ice salt and fresh water because of this ability to live in such a wide variety of conditions they have been able to survive for millions of years Cyanobacteria and other bacteria that use photosynthesis as a process of making food do not produce oxygen compounds other than water are combined with carbon dioxide to form sugars The green algae are also very
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