A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.
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Continental lithosphere can reach the subduction zone
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algae are autotrophic
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the cell wall is made up of cellulose
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A protein pump that requires ATP for active transport.
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