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What is the study of nonliving systems and phenomena?

  1. Astronomy

  2. Physics

  3. Chemistry

  4. Biology

The correct answer is: Astronomy

The study of nonliving systems and phenomena relates to objects and processes that do not display biological characteristics such as movement, growth, or reproduction. Therefore, options B, C, and D are not the correct answers. While each of these choices is a valid scientific discipline, they all primarily focus on living organisms or the interactions and processes within living systems. Astronomy, on the other hand, is the study of the physical universe, including objects and phenomena such as stars, planets, galaxies, and cosmic rays. It also involves the study of natural forces and energies, such as gravity, electromagnetism, and light. Thus, option A is the best answer for the question.