What is the difference between the oxygen we breathe and the ozone located in the earth’s stratosphere?

Explanation:

Ozone os a Trioxygen, O3 whuch is present in very low concentrations throughout with its highest concentration high in the ozone layer of the stratosphere, which absorbs most of the Sun's ultraviolet (UV) radiation and has a function as a strong oxidant.

Oxygen is a diatomic molecule, O2 which is 21 % abundant in air. It has a vast array of functios such as in respiration in humans, also in oxidation etc.

amber has allowed scientists to study dna that has been preserved over millions of years.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.