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What are the modifications that are obse...

What are the modifications that are observed in birds that help them fly?

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### Step-by-Step Solution: 1. **Streamlined Body**: Birds have a streamlined body shape which reduces air resistance and allows for smooth and rapid movement through the air. This aerodynamic shape is crucial for efficient flying. 2. **Feathers**: The presence of feathers is another significant modification. Feathers provide insulation, help in flight by creating lift, and also play a role in waterproofing. They are essential for maintaining body temperature and aiding in the aerodynamic properties of birds. 3. **Modified Forelimbs**: The forelimbs of birds have evolved into wings. This modification is critical as wings are the primary organs for flight. The structure of the wings allows birds to generate lift and maneuver in the air. ...
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