The purpose of the salmonʻs fins is to help the fish guide through the water and be able to swim freely throughout the ocean.
Porpoises have triangular dorsal fins (as opposed to the curved dorsal fins of dolphins and whales). Some species of porpoise have small bumps on their fins, but the purpose of these bumps is unknown.
The fins act to distribute heat from the system or absorb heat into the system from the surrounding air depending on the location and purpose of the coils carrying the coolant. In a heat pump system, the fins function depends on which way the heat is being transferred. For an air conditioner, the indoor fins bring heat to the coolant from the air and expel heat at the outdoor fins into the air
To speed up the transfer of heat energy.
Exchanges heat from the coolant to the air which flows through the fins.
Some reptiles possess characteristics which may resemble fins, but no, reptiles do not have fins. Fish have fins. An example of a fin-like structures on a reptile would be a dewlap. This is a flap on skin under some lizard's necks used primarily for territorial and mating displays. Although the fins of fish may be used for these purposes to some extent, the primary purpose of fins is moving through water. Another fin-like structure on a reptile would be a frill around the neck. The purpose of a frill is the same as a dewlap.
The engine helps the plane to fly by proiding thrust and lift.
banana
Their goal was to fly a plane with an engine, and it was a great success!
They are endangered because the Japanese are killing them for their fins, which are used as a medical purpose.
An inlcined plane is something that helps you move something to a higher place.
A Hang glider is used for FUN:)))