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    What happens to the natural world if all the insects disappear?

    There are an awful lot of insects. It's hard to say exactly how many because 80% haven't yet been described by taxonomists, but there are probably about 5.5m species. Put that number together with other kinds of animals with exoskeletons and jointed legs, known collectively as arthropods – this includes mites, spiders and woodlice – and there are probably about 7m species in all.

    from Phys.org - latest science and technology news stories http://bit.ly/2U2bgws

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