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jing du

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why do we have to protect some species from extinction?

some species can't adjust themselves to the world.they will extinct naturally.so the question is why we hunman being have to interrupt that ?


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    Aug 18 2012: One species can affect the entire ecosystem and the whole food chain. Though they naturally would die out, it would also affect how we live in general too.

    If you kill the wolves, there will be an overpopulation of deer. Overpopulation of deer could lead to overgrazing of grass or whatever plants they eat, and overgrazing of grass could lead to mass extinction of some plants that other animals would need.

    If you kill some animals on the lower end of the food chain, then the ones who feed off of them will become endangered, the ones who feed off those predators may become endangered, and eventually us humans, who are at the top of the food chain, would need to deal with many changes.

    The ecosystem is one gigantic system of dependencies of one another, and we are heavily dependent on the ecosystem ourselves.
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      Aug 18 2012: however species have been keeping dying out in every period.if one specy is really so important for our ecosystem ?

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