Which best describes the development of penicillin? A. It was originally discovered as a product produced by plants

B. It was originally discovered from mold growing on petri dishes.

C. It was originally discovered to be ineffective

D. It was originally discovered to treat viral conditions.

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integrated circuit (ic) is defined as a set of electronic circuits on one small flat piece of semiconductor material, normally silicon. a functional electronic circuit requires transistors, resistors, capacitors, inductors, etc., and the connections between them.