The Ozone Layer Filters Out Harmful Ultraviolet Rays from Sunlight

question 292

Multiple Choice

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.

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Definitions:

Population Parameters

Numerical values that summarize data for an entire population, such as the mean or standard deviation.

Null Hypothesis

A hypothesis that assumes no significant difference or effect in a particular situation, serving as a default position until evidence suggests otherwise.

μ = 25

This symbol (mu) represents the mean of a population in statistics, here specifically indicating a population mean of 25.

Research Literature

Written documents that summarize and critically analyze the existing body of knowledge on a particular topic.