zoology practice test / quiz and need the explanation and answer to help me learn.

Zoology is the scientific study of animals. It involves the investigation of the anatomy, physiology, behavior, genetics, ecology, and evolution of animals, from the simplest single-celled organisms to the most complex mammals, birds, fish, and reptiles. Zoologists study the structure and function of animals, their interactions with each other and with their environment, and how they have evolved over time.
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