The air that we breathe contains oxygen, water, nitrogen, dust, pollen, pollution, and
other materials. We can clean air using an air filter. Air is most likely
Correct answer is C: Air is a mixture in which the components named above are physically combined. Not A because air does not only consist of a single substance. Not B because air is not made up of two or more atoms joined together. Not D because air does not consist of two or more elements chemically combined together.
Explanation: A Mixture is a combination of several substances or element.
A combination of Oxygen, Water, nitrogen, dust, pollen and pollution which makes up the Air makes it a mixture as deducted from the definition of mixture.
