Why Might Gender Differences in Activity Level Disappear in the Future

question 28

Multiple Choice

Why might gender differences in activity level disappear in the future?

• A) because of the women's movement and decreasing discrimination
• B) because cohorts of women who had high activity levels in youth will continue into old age
• C) because increased life expectancy and more options for an active lifestyle means that more couples will stay active together
• D) because programs of interest to women are becoming more common

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Definitions:

Alveoli

Tiny air sacs within the lungs where gas exchange between the air and blood occurs.

Dalton's Law

The principle that the total pressure exerted by a mixture of gases is equal to the sum of the pressures that each would exert if it were present alone.

Partial Pressures

The pressure that a single gas in a mixture of gases would exert if it alone occupied the entire volume of the mixture.

Total Pressure

The combined pressure exerted by a mixture of gases in a container, equal to the sum of the pressures that each gas would exert if it were alone.