PDF chapter test TRY NOW
Study the following statements about ozone:
a. It is essential for breathing of living organisms.
b. It is used to disinfect water.
c. It absorbs ultraviolet rays.
d. Its proportion in air is about 3%.
Which of these statements are correct?
a. It is essential for breathing of living organisms.
b. It is used to disinfect water.
c. It absorbs ultraviolet rays.
d. Its proportion in air is about 3%.
Which of these statements are correct?
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