once, there was a fish and cat. the cat wanted to eat the fish, and it did.
many years later, another fish was put into the tank. this one had small, weak hands. it put up more of a fight, but still got ate.
generations later, another fish came. this fish had even stronger hands, and it hurt the cat before being eaten.
hundreds of years later, a new fish. this fish had stronger, fistier hands. this fish knocked out the cat by punching it.
fish all over the world evolved similarly.
females preferred fish with stronger hands, and those who were stronger were more likely to live long enough to procreate.
as scientists studied the fish, they realized this evolution was due to natural and sexual selection.
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