"Beaver are definitely a keystone species in an aquatic ecosystem. A keystone is like a bridge and you have that one stone that will hold that whole bridge together- that will lock it in. If you pull that one stone out it all collapses in on intself. Beaver lock the aquatic ecoystem in."
Why Beavers Build Dams
"One technique is to slice 1/2 way through and let the wind do the rest."
"The incisors are strengthened with iron which makes them orange... they grow continuously and even self sharpen."
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