Why does a knife have a sharp edge and a needle has a sharp tip ?

Why does a needle have a sharp point ?

Why does trachea have 'C' shaped rings of cartilage?

Why does an individual have only two alleles even if a character shows multiple allelism?

A question paper has 6 questions. How many ways does a student have to answer if he wants to solve at least one question?

How many edges does a cone have?

Answer the following questions: why do we fall sideways when we are sitting in a bus and it takes a sharp turn?

Have you seen that objects beyond and above a holi fire appear to be shaking? why does this happen ? Give scientific reasons

Why do the blades of a pair of scissors have edges ?

Why does human being have an important place in the environment?