Because the shape of a fin is flat and thin, it has a very narrow cross-section in one direction and a much larger cross-section in a perpendicular direction, consequently, a fish can use the fin to guide its motion through water; effectively, the fin makes it easier for a fish to move in a forward direction and less likely to slip sideways. There are also movable fins which can be used to actively push the fish in the direction it wishes to go.
protruding and easily movable anthers help in wind pollination.
No, it is not. Dolphins use their dorsal fin for balance.
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SENTENCE: My heavy table isn't movable. My teacher marked me right on this so, it has to be right.
The jaw AKA mandible. You use it to chew with.
it does nothing
use calculator
The caudal fin or better known as the ¨tail¨ of a fish is used for propulsion (Thrusting forward).
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movable type
seahorses are entirely propelled by their dorsal fin. They use their tiny pectoral fin on top of their heads for steering