Nancy, Age 12, Has Just Experienced a Sudden Growth Spurt

question 21

Multiple Choice

Nancy, age 12, has just experienced a sudden growth spurt. According to the usual sequence of puberty, soon she will notice _____.

• A) initial pubic hair growth
• B) breast development
• C) her hips growing wider
• D) an increase in her shoe size

Distinguish between endothermic and ectothermic temperature regulation strategies.

Identify the role of brown fat in heat production.

Understand the concept of the thermoneutral zone in endotherms.

Explain the role of the hypothalamus in regulating body temperature.

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Definitions:

Equator

An imaginary line around the middle of the Earth, equidistant from the North and South Poles, dividing the Earth into the Northern and Southern Hemispheres.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in the air and absorbed by plants in photosynthesis.

Climate Change

The significant and lasting changes in the statistical distribution of weather patterns over periods ranging from decades to millions of years.

Intertropical Convergence Zone

The region near the equator where the northeast and southeast trade winds converge, often leading to thunderstorms and heavy precipitation.