A heterogenous mixture can be defined as any mixture
Answer Details
A heterogeneous mixture is a type of mixture where the components are not evenly distributed throughout the mixture. This means that the composition of the mixture is not uniform, and it can be visually distinguished as having different parts or phases. This is in contrast to a homogeneous mixture, where the components are evenly distributed and the composition is uniform throughout. Therefore, the correct option is: "whose composition is not uniform".