list any two unique features of birds that make them to fly
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Unique features r as follows.
1) Lightweight, smooth feathers. This reduces the force of weight and drag.
2) A beak, instead of heavy bony jaw, and teeth this reduces the force of weight.
3) An enlarged breastbone called a sternum for flight muscle attachment. This helps with the force of thrust.
4) A streamlined body. This helps reduce the force of body.
5) Wings this enable the force of lift.
6) A rigid skeleton to provide firm attachment for powerful flight muscles. This helps with the force of thrust..
7) Light bones. A birds bones are basically hollow with air sacs and thin tiny cross pieces to make bones stronger. This reduces the force of weight.
If u like mark plz as brainliest.
1) Lightweight, smooth feathers. This reduces the force of weight and drag.
2) A beak, instead of heavy bony jaw, and teeth this reduces the force of weight.
3) An enlarged breastbone called a sternum for flight muscle attachment. This helps with the force of thrust.
4) A streamlined body. This helps reduce the force of body.
5) Wings this enable the force of lift.
6) A rigid skeleton to provide firm attachment for powerful flight muscles. This helps with the force of thrust..
7) Light bones. A birds bones are basically hollow with air sacs and thin tiny cross pieces to make bones stronger. This reduces the force of weight.
If u like mark plz as brainliest.
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