| Matter and the Environment |
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The Basic Units of Matter
Atoms
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Scientific evidence demonstrates that life originated in water and stayed there for how many years before moving onto land
3 billion
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Chemists currently recognize how many elements occurring naturally
94
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Name the 3 types of polymers essential to life
proteins, nucleic acids, and carbohydrates
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Name the 4 properties of water
cohesion, resistance to temperature change, ice density, universal solvent
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