Where are the run-Ons in this sentence

Their wings are shaped like flippers penguins use them to propel themselves through the water at speeds up to 30 miles per hour

How do I fix this

Respuesta :

Penguins wings are shaped like flappers they use them to propel themselves through the water at speeds up to 30 mi./ an hour.

Answer:

There should be a period after 'Their wings are shaped like flippers'

Explanation: