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Levels of Organization
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Atoms Smallest part of matter NON-living
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Molecules 2 or more bonded atoms Form compounds NON-living
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Macromolecule Very large molecules Proteins, fats, carbohydrates
NON-living
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Organelles “Tiny organs” Made of macromolecules Non-Living
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Cells Made of organelles Basic unit of structure & function LIVING
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Tissues The same kind of cells working together LIVING
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Organs Tissues that work together. LIVING
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Organ Systems Organs that work together LIVING
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Organisms Entire living things Usually made of systems
May be a single cell LIVING
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Population Same type of organism living together.
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Community Several populations living together Populations interact
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Ecosystem A biotic (living) community plus the abiotic (nonliving) features
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Biome Similar ecosystems on earth together
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Biosphere Whole living layer around the globe
Includes abiotic features
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Cells Tissues Organs Organ Systems
Atom Molecule Macromolecule Organelle Cells Tissues Organs Organ Systems Organisms Population Community Ecosystem Biome Biosphere
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