Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Minnesota nwere mpaghara ebe obibi anọ: Prairie Parkland, na ndịda ọdịda anyanwụ na ọdịda anyanwụ nke steeti ahụ; Ebe Ọwụwa Anyanwụ Broadleaf Forest (Big Woods) na ndịda ọwụwa anyanwụ, na-agbatị na eriri dị warara ruo n'akụkụ ugwu ọdịda anyanwụ nke steeti ahụ, ebe ọ na-agafe na Tallgrass Aspen Parkland; na ugwu Laurentian Mixed Forest, oke ọhịa dị n'etiti oke ọhịa boreal nke ugwu na oke ọhịa broadleaf na ndịda. Oké ọhịa ndị a dị n'ebe ugwu bụ ebe ọhịa sara mbara nke osisi pine na osisi spruce jupụtara, bụ́ ebe osisi birch na poplar na-adị n'ebe dị iche iche.  Ajụjụ: Olee otu okwu e ji akọwa otú oké ọhịa ndị a hà?
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