Brian Was of Average Weight Throughout His Childhood and in College

question 105

Multiple Choice

Brian was of average weight throughout his childhood and in college. However, he has gained more than 30 pounds over the past 18 months and has become obese. Which of the following is most likely to be the cause of his obesity?

• A) the decline in food prices in his region
• B) the absence of physical activity in his daily routine
• C) the lower availability of energy-saving devices
• D) the decline in his mental health problems

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Definitions:

Desertification

A progression where arable land turns into barren desert areas, usually caused by periods of dryness, the removal of trees, or improper agricultural methods.

Topsoil

Uppermost layer of soil; contains the most organic matter and plant nutrients.

Endemic

A term describing a species or condition regularly found and restricted to a certain area or population.

Dry Deposition

The process by which pollutants in the atmosphere are transferred to the Earth's surface without precipitation.