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What is the study of living organisms?

  1. Astronomy

  2. Botany

  3. Ecology

  4. Zoology

The correct answer is: Zoology

Biology is the study of living organisms. Astronomy is the study of celestial objects and phenomena in outer space, not living organisms. Botany is the study of plants, not all living organisms. Ecology is the study of the interactions between living organisms and their environment, not just the organisms themselves. Zoology is the study of animals, making it the best answer for the question.