The ozone layer filters out harmful ultraviolet rays from sunlight before they can reach the surface of our planet and cause damage to humans and other life forms. Any substantial reduction in the amount of this ozone would threaten life as we know it. Consequently, the appearance of a large "hole" in the ozone layer over Antarctica represents a major environmental crisis. Colin Baird and Michael Cann, Environmental Chemistry, 3^rd edition A) Argument; conclusion: Any substantial reduction ... life as we know it. B) Argument; conclusion: The appearance of a large ... environmental crisis. C) Argument; conclusion: The ozone layer ... surface of our planet. D) Argument; conclusion: The ozone layer ... and other life forms. E) Nonargument.

Question

Quizplus · Accepted Answer

The passage presents an argument about the importance of the ozone layer and how its reduction would threaten life as we know it. The conclusion of this argument is that the appearance of a large "hole" in the ozone layer over Antarctica represents a major environmental crisis.

The Ozone Layer Filters Out Harmful Ultraviolet Rays from Sunlight