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Living Environment- Unit 1 Characteristics of life 1. All living things are made of 2. The cell is the basic unit of 3. All living things use energy to maintain life4. All living things maintain a stable internal environment5. All living things maintain various chemical reactions- 6. All living things may pass hereditary information to new organisms- - 7. All living things are diverse and may be grouped - Chemical Composition 1. All living things are made of 4 main elements: 2. Organic molecules contain both – 3. Organic molecules include: 4. Inorganic molecules – Examples: Salts, Minerals, Acids, Bases, Organization of an Organism 1. Unicellular- one celled organism 2. Multicellular- made of 3. Tissue- a group of similar cells 4. Organ- made of tissue to 5. Organ system- a group of organs working together to perform – 6. Organism- a group of organ systems working 7. Life Functions- nutrition, excretion, respiration-
