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Explain how the meteorite that struck Earth approximately 65 million years ago contributed to a mass extinction event at the end of the Cretaceous Period.
Cell Metabolism
The complex set of life-sustaining chemical reactions in cells that allows organisms to grow, reproduce, maintain structures, and respond to environments.
Oxygen
A chemical element essential for most forms of life on Earth, used in cellular respiration.
Raw Materials
Basic materials from which products are made, including direct materials like wood for furniture or iron ore for steel production.
Isotonic Solution
Solution that is equal in solute concentration to that of the cytoplasm of a cell; causes cell to neither lose nor gain water by osmosis.
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