_a-chitinous-exoskeleton-is-a-characteristic-feature-of-arthropods-r-it-allows-diffusion-preview-1.jpg "A: Chitinous exoskeleton is a characteristic feature of arthropods. R: It allows diffusion from chitinous exoskeleton is a characteristic of Video Screenshot Preview 1")
Gallery_a-chitinous-exoskeleton-is-a-characteristic-feature-of-arthropods-r-it-allows-diffusion-preview-3.jpg "A: Chitinous exoskeleton is a characteristic feature of arthropods. R: It allows diffusion from chitinous exoskeleton is a characteristic of Video Screenshot Preview 3")
Gallery_a-chitinous-exoskeleton-is-a-characteristic-feature-of-arthropods-r-it-allows-diffusion-preview-hqdefault.jpg "A: Chitinous exoskeleton is a characteristic feature of arthropods. R: It allows diffusion from chitinous exoskeleton is a characteristic of Video Screenshot Preview hqdefault")
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