Mixture can be _____________ in nature.

OPTION 4 is correct, i.e. Both homogeneous and heterogeneous.Homogeneous MIXTURE:A homogeneous mixture is a type of mixture in which its components are present in the same proportion.An ALLOY is considered a homogeneous mixture.Gunpowder is a homogeneous mixture of sulfur, charcoal and potassium nitrate.Examples of homogeneous mixture are rainwater, vinegar, air, saline solution, etc.Heterogeneous mixture:A heterogeneous mixture has components WHOSE proportions vary throughout the sample or is simply a mixture that is not uniform in composition.Lime water is the heterogeneous mixture.