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Biology 12 Online
OpenStudy (anonymous):

What determines the reactivity of an element? The number of protons in the nucleus The number of electrons in the outer energy level The number of electrons in the innermost energy level The number of neutrons in the nucleus Question 23 (Multiple Choice Worth 4 points) (SC.8.L.18.4) All of the following are abiotic factors in an ecosystem except: Algae pH Salinity Climate

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