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Whale- The limbs (both front and hind) are splayed out to each side, partially above the water meniscus. Like the fins of a fish, they prevent the animal from rolling uncontrollably in the water, and also help to stop it from sinking - although the air in the crocodile's lungs is primarily responsible for that.
Cat-The main difference between the organisms are the uses of the appendage and the size and number of certain bones. The human arm is used for a variety of functions while the lizard's and the cat's are used for walking an climbing, the whale's for swimming, the frog's for support and the bird's and the bat's for flying
Bat-Bats are mammals with front limbs modified for flight. The chest and shoulders are large and well-muscled to provide power to the wings.The thumb, always free of the wing membrane, is used for walking or climbing in some species; in others it is used for handling food.
Bird-The limb served the SAME function: as a forearm (not a wing) in the last common ancestor of tetrapods. ... As WINGS, the bird wing and bat wing are analogous. They are similar to each other in function, performing as wings for flight, but have evolved differently.
Crocodile-The limbs (both front and hind) are splayed out to each side, partially above the water meniscus. Like the fins of a fish, they prevent the animal from rolling uncontrollably in the water, and also help to stop it from sinking - although the air in the crocodile's lungs is primarily responsible for that.
-G00GLE
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