posted by Ruby .
Why do humans use running shoes, winter boots, snowshoes, skis and flippers? Why are these not biological adaptations? Use animals as examples.
I don't use any of these. But I don't run, swim, or go out on the snow. I don't need these things.
I do not understand
Why do fish have flippers?
Why are polar bears white?
Why do horses have hard hoofs?
Why do some rabbits (showshoe hares) have wide feet?