Question

Q26. Answer the following
questions:- (a) Why can a bird
fly? (b) What happens when it
rains?
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Answer 1

Answer:

A) Birds have hollow bones that are very light and strong. Their feathers are light and the shape of their wings is perfect for catching the air. Their lungs are great at getting oxygen and very efficient, so they can fly for very long distances without getting tired.

B)Once on the land, rainfall either seeps into the ground or becomes runoff, which flows into rivers and lakes. What happens to the rain after it falls depends on many factors such as: ... Land with plant cover slows the speed of the water flowing on it and thus helps to keep soil from eroding.

Answer 2

billateriacal symmatrical body structure of birds help to fly