The answer is c. west nile virus in about year 2012 it appeared and in 1937 there was a outbreak in africa.
Answer:
mixture
Explanation:
Chromatography is a process to separate the various substances present in mixtures based on their properties such as charges, size, affinity, etc.
A pure substance cannot be separated into various substances as it consists of a single type of substance only. A mixture consists of two or more substances that are separated by various physical and chemical methods.
The ink was separated into different colors on the chromatographic paper suggesting that it was a mixture of various colors. Therefore, the ink was a mixture, not a pure substance.
Wastewater from power plants are usually dirty and infected with bacteria.
Chromoplasts contains orange pigment.