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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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An increase in the size of the ozone hole would be expected to ________ .

  1. a. increase skin cancers
  2. b. lower sea level
  3. c. increase respiratory disorders
  4. d. increase primary production in the arctic

Summary Introduction

Introduction: The ozone shield that is present in the Earth’s stratosphere absorbs most of the ultraviolet radiation. At this layer, the concentration of ozone (O3) is high compared to the other regions of the atmosphere. There are some toxic gases that affect the ozone layer. When this gases rise upwards, they are exposed to the UV light leading to a chemical reaction which and thereby creating chlorine atom. This leads to the destruction of ozone atom as well as ozone layer.

Explanation

Reasons for the correct statement:

The ozone layer in the upper atmosphere protects against incoming UV radiation.  Chlorofluorocarbon (CFC) is a chemical compound that causes thinning of the ozone layer. With this thinner ozone layer, human skin is exposed to more UV radiation. More exposure of skin to UV rays causes mutation and also leads to skin cancer.

Option a. is given as “increase skin cancer”. An increase in the size of the ozone hole would be expected to increase skin cancers. Hence, option a. is correct.

Reasons for the incorrect statements:

Option b. is given as “lower sea level”...

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