Explanation: For only 7 points no one is going to do that. Make at 50 and I will do it.
It’s false, sickle cell anemia is about erythrocytes
The main organs of the Central Nervous System are the Brain and the Spinal cord/Column
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Answer:</h2>
There two features which facilitates bird <u>to fly are presence of light and smooth feathers and light bones</u>.
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Explanation:</h2>
Birds are the only living creatures which has the ability to migrate from one place to another through flying. There are many physical features present in their body which facilitates them in flying.
<u>Among the two features and their role in flying are as follows: </u>
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Light and smooth feathers: Wings are the organ which is involved in flying. It is composed of feathers which are very colorful and are light in weight and smooth in its appearance. This apart from reducing the body weight helps the bird to reduce the force and drag during flying.
- Light bones: The skeletal system of the birds is composed of light bone which are primarily hollow with air sacs. This accounts for less body weight while flying.
