Question

of what use are their legs to this animal ?

Answer 1

In short, evolution would prohibit fishfrom having floppy, inefficient legs. ... If a fish had a genetic defect and grew legs, it would be less aerodynamic and unable to get away from predators. Fins work to push the water and propel the fish forward, and legs just aren't built to do ...

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Answer 2

Answer:

The webbed toes of frog, duck and tortoise help them to swim easily through water.