August 2012
Beginner
304 pages
9h 13m
English
chaptersummary |
•fish |
Not all animals propel themselves with the use of arms and legs. Some use their bodies.
Fish propel themselves through a fluid environment, which is very pertinent to the way that they move. They do this by flexing their backbone in such a way that a wave runs along the length of the body. As it travels along the fish’s body the wave gets bigger. This is called a sinusoidal ...
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