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ODS means
A) Ozone developing distance
B) Ozone depleting substance
C) Ozone data source
D) Office data secrecy

Answer
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Hint: These are chemicals that can destroy the protective layer of earth. It results in the formation of an ozone hole.

Complete Answer:
- In biological science, ODS are chemicals that can go through oxidation and can release chlorines and other gases. These chemicals can be methyl bromide, carbon tetrachloride, methyl chloroform etc.
- The reaction between UV rays and ozone comes to the release of newly formed oxygen. Several halocarbon refrigerants can also cause the ozone hole depletion. These substances can transport to the stratosphere of the environment by the mixer if turbulent when it is excluded from the environment surface and the molecules settle so fast.
- When the halocarbon emission is increased, the ozone depletion also starts to increase then. Several harmful wavelengths are prevented by the ozone layer which passes through the atmosphere of the earth.
- These wavelengths can be more harmful to humans as it can cause several diseases such as sunburn, skin cancer, cataracts of eyes or sometimes it leads to permanent blindness. It can also be harmful for several plants by the increase of the thinning ozone layer.

Hence Option B: Ozone depleting substance is the correct answer.

Note: There is also a term called ozone depleting potential. The calculation of the measure by which it can be calculated how much a chemical can affect the layer of ozone gas is called ozone depleting potential. The increased number of potential means the maximum amount of chemical used.