- 生物学概述;可汗学院 https://www.khanacademy.org/science/high-school-biology/hs-biology-foundations/hs-biology-and-the-scientific-method/v/overview-of-biology
- (2013) 科学方法:步骤、术语和例子;YouTube https://www.youtube.com/watch?v=BVfI1wat2y8
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