iBT TOEFL Topic Vocabulary Breakthrough Unit 084

iBT TOEFL Topic Vocabulary Breakthrough Unit 084
Author: Li Xiaolai

84. All fishes are vertebrates (animals with backbones) with gills for breathing, and most of them have fins for swimming, scales for protection, and a streamlined body generally with a pointed snout and posterior and a broad propulsive tail for moving easily through the water.

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