Give reasons for the following:
We can easily move our hand in air but not through liquid or solid?

Give a reason : We can easily move our hand in air but to do the same in solid block of wood we need a Karate expert.

Give reasons for the following: Birds can fly but the mammls cannot.

Give reasons for the following: A square can be thought of as a special rhombus.

Give reasons for the following: Why do aluminuim sheets not corrode easily?

Give reasons for the following: A square can be thought of as a special rectangle.

Give reasons for the following : Immersion rods for heating liquids are made up of metalic substances.