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Dovator [93]
3 years ago
7

What is the main function of the ozone layer?​ a. ​to provide cloud cover for protection of polar regions b. ​to block most of t

he sun's damaging rays from reaching Earth c. ​to filter toxins from acid rain d. to trap carbon dioxide and warm the planet​ e. ​to provide a source of oxygen for photosynthesis
Biology
1 answer:
murzikaleks [220]3 years ago
6 0

<u>Answer:</u>

The main function of the ozone layer is to block most of the sun's damaging rays from reaching Earth.

Option: (b)

<u>Explanation:</u>

  • The stratosphere containing high level of ozone molecules about 30 km to 50 km altitude helps to absorb the sun's ultra violate rays.
  • In its absence, it would be very difficult for anything to survive. Plants cannot live and grow as the UV light causes weakening of plants.
  • It causes skin cancers. The increase in UV flux will lead to increase in sunburn, blindness, cataract, causing potentially death of animals and plants.
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B describes carbohydrates, which can function as a storage of energy (e.g., starch or glycogen) or structural components (e.g., cellulose). The three examples just given are polymers of glucose, a monosaccharide; monosaccharide generally have the empirical formula CH2O; this is not the empirical formula of the given molecule (and, in any case, there are too few oxygen atoms for the number of carbon atoms), and so B is incorrect.

C describes an amino acid, likely an α-amino acid, which consist of a central, saturated carbon bonded to amino (—NH2) and carboxyl (—C(=O)OH) functional groups and a variable side chain, which determines the amino acid’s properties. Since the formula of an amino acid must contain nitrogen, which the formula given doesn’t have, the molecule couldn’t be an amino acid, and so C is incorrect.

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