Page 37 - Beavers: Skilful Dam Constructors

shape, which was called concave, human beings could

dam the water at an angle of exactly 45 degrees. Also
concave dams, being the strongest are best able to
withstand the water pressure. But how come you
possess such knowledge, Mr. and Mrs. Beaver? Who

taught you this? I know that dams are constructed by
engineers. My sister is an engineer too; she had to have
years of education before she could become an

engineer. But you cannot go to school, so how come you
know this? Did you find the correct knowledge by trial
and error? Who taught you this knowledge?

What
surprises
Karim most is
how beavers
can construct
a dam just like
the ones
humans do.

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