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Teachers, Students, Home School Scholars, and Inquiring Minds of all ages -- Plants are one of the higher forms of life on earth. Their cells are organized with intracellular structures called 'organelles'. This makes them 'eurkaryotes'. Plant and animal cells share some of the same type of organelles, but there are differences as well. These organelles have specialized functions. The nucleus contains the DNA. Proteins are synthesized in ribosome complexes, many of which are attached to the Endoplasmic Reticulum. One of the organelles unique to plant cells are chloroplast. These organelles contain the structures needed to use light energy to change carbon dioxide into sugar. In catalyzing these reactions, the by-product is O2, which is emitted into the atmosphere. Plants are absolutely necessary to sustain animal life on earth - not only for a source of food, but also for the very oxygen we breath. In turn, animals exhale carbon dioxide - the very gas plants need to survive. The interdependence of bacteria, plants and animals create a ecosystem. The balance between all forms of life are necessary to the survival of all.
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