Question

how do beavers work their magic? they build dams. a dam is a wall that goes from one side of a stream to the other. a beavers dam is made of logs, branches, stones, and mud. the logs and branches come from trees that beavers have chopped down with long teeth that never stop growing. in fact, beavers must gnaw on wood, or else their teeth will get so long they wont be able to close their mouths. how do beavers build dams? they chop down trees with their long teeth and then make a wall across a stream with logs and branches. they join together to form a long wall that goes from one side of a stream to the other. they find logs and branches to stick in the mud and stones at the bottom of a stream. they constantly chew on wood near a stream to keep their front teeth from getting too long.

Explanation:

Los castores cortan los árboles con sus dientes largos y luego construyen una pared a través de un arroyo utilizando troncos y ramas para formar un dique.

Answer:

They chop down trees with their long teeth and then make a wall across a stream with logs and branches.