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What is science
•Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe.
What is the difference of classical theories play and modern theories play
•Play theories are divided into two groups: a) classical theories, which originated in the nineteenth and early twentieth centuries, and b) modern theories, which were developed after 1920. a) Classical theories: Classical theories have tried to explain why play exists and what purpose it serves.
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