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- Bats
- Bats are the only present day ___1___ mammal.
- Bat's wings are really ___2___ arms very different from birds' wings.
- The surface of the wing is a thin membrane of ___3___ stretched tight.
- This membrane of skin extends all the way to the ___4___ legs.
- Both the legs and the ___5___ support the wing membrane.
- flying
- eating
- living
- swimming
- flying
- modified
- nonaltered
- gigantic
- feathered
- modified
- skin
- hair
- feathers
- lungs
- skin
- hind
- front
- ventral
- dorsal
- hind
- tail
- ears
- eyes
- arms
- tail