Humans were sacrificed regularly in aztec society because they believed

an aneroid barometer is different from a mercury barometer in that it provides readings that increase as air pressure increases.

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the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.