The chemical bahaviour of an atom depends

The positive cross elasticity of demand between two products means the two products

Which one of these is an exception to the law of demand?

The goods whose demand is not tied with the demand for some other goods are said to have 

Who introduced the concept of elasticity of demand?

Economics of scale means

Diamond-water paradox establishes the fact that

Which of the following is/are the causes of demand curves moving downwards to the right?

Movement along a demand curve as a result of change in price is known as 

When AR is constant, MR is