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Birds
Beginning of essay
are some of the most amazing animals on earth. Most have the
ability to fly. Some use ground travel. Some use claws, others use only their
beaks. come in many varieties of colors and sizes.
are warm-blooded, egg-laying creatures from the aves class. Along
with the obvious feathers and wings, bir ....
Middle of essay
....species and 50 sub species have become extinct in the
last 300 years. Over half of them occurred in the 1800’s. Another thirty percent
occurred in the 1900’s. Over ninety percent of these extinction’s were island
forms, which are particularly vulnerable to human interference. Destruction of
habitat is the biggest cause of extinction. Other causes are the introduction of
predacious animals, and disease plays it’s part too.
The respiratory system in birds serves to transfer oxygen to the bird’s
b.... |
| Number of words: 751 |
Approximate pages: 3 |
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