Some scientists think that complex eukaryotic cells formed from the Union of two separate prokaryotic cells. The engulfing or one prokaryotic cell by another is a plausible explanation of why A eukaryotic cells lack the defense mechanisms of prokaryotic cells. B eukaryotic cells don't share any similarities with prokaryotic cells. С organelles in a eukaryotic cell work cooperatively D organelles in a eukaryotic cell would attack other cells. Time Remaining 1 hour 15 minutes
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Ответ:
Energy efficiency represents the ratio between the useful output and input of an energy.
Energy conservation represents a process which is used to reduce the quantity of energy that is used.