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对于青蛙体色随环境改变而改变的演示实验,学生们做完后,往往得出片面的的结论:外界环境变化是动物体色变化的根本原因或主要原因。为了让学生全面地认识蛙体色变化的原因,我们又补充了下面实验:
For the demonstration that the frog body color changes with the change of the environment, the students often finish the one-sided conclusion after finishing the work: the change of the external environment is the root cause or the main reason of the body color change of the animal. In order to allow students to fully understand the causes of frog body color change, we have added the following experiment: