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Biology 41 Online
OpenStudy (anonymous):

What is a substance formed by the chemical joining of two or more elements in definite amounts? A. isotope B. Compound C. Enzyme D. Nucleus

OpenStudy (anonymous):

What do you think it is?

OpenStudy (abhisar):

Welcome to OpenStudy ! This is biology section. Please repost your question in chemistry section. thank you.

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