Air is a mixture.
as per definition, mixture is a combination we get after adding two or more things together in any proportion.
air is a mixture because it contains a number of gases like nitrogen , oxygen, carbon dioxide. it also contains dust particles, small organisms, water vapors etc.
carbon monoxide is not a mixture as it is formed from fixed proportion of carbon and oxygen.
similarly, water is is not a mixture as it is formed from fixed proportion of hydrogen and oxygen.
A. Refraction
This is because refraction occurs when a beam of light passes from one material into another material.
The correct answer to this question is this one: "<span>B) 1 to 3√(3/2)^2 "
</span><span>
The fact that </span>Satellite A orbits the earth at a height 3.00 times the earth's radius and Satellite B orbits the earth at a height 2.00 times the earth's radius. The ratio of the of the period of Satellite B to the period of Satellite A is 1 :<span> 3√(3/2)^2
</span>
By burning the substance, or by digesting it.
by cosine law we know that


now using above equation



by solving above quadratic equation we have

so it is at distance 124.9 m from deer a