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9 Cards in this Set
- Front
- Back
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radioactive dating
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methods of establishing the age of materials
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isotopes
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atoms of the same element that differ in the number of neutrons they hold
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radioactive decay
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some isotopes have unsatlbe nuclei. they tend to release particles or radiant energy, or both
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radioactive isotopes
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isotopes that undergo radioactive decay
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half-life
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length of time it takes for 1/2 of any size of an isotope to decay
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coacervates
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droplests composed of different types of molecules generated in lab test tubes
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chemosynthesis
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how bacteria obtains energy from the oxidation of various inorganic substances
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cyanabacteria
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photosynthetic unicellular prokaryotes
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endosymbosis:
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small prokaryotes gave way to mitochondria/chloroplasts in larger, eukaryotes
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