Humans have many activities that affects animals and their habitats. With George Bank Fishery, over fishing occurred because the world demands increased. Humans are also responsible for the introduction of foreign species that invade the environment, sometimes in dramatic fashion. For example, the comb jellies from North America have all but eliminated commercial fishing in the black sea. (the left is a picture of a huge comb jelly.) They eat microscopic plankton thereby depriving fish of their food supply. I think humans are having the most impact concerning animal's homes and food supply that will eventually lead to their extinction.
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