Even According to the Lowest United Nations Estimates, the Globe

question 9

Multiple Choice

Even according to the lowest United Nations estimates, the globe will have two billion more people living on it by the year 2050. After that, the population may actually shrink because, while life expectancy may continue to rise, the average number of children each woman gives birth to is poised to drop below 2.1. What demographic variable might make the global population drop?

• A) a return to agrarianism
• B) fertility
• C) race
• D) immigration
• E) emigration

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Definitions:

Mesonephric Duct System

Embryonic structures that develop into the male reproductive system and contribute to the female reproductive tract.

Testosterone

Steroid hormone secreted primarily by the testes; aids in spermatogenesis, maintenance and development of male reproductive organs, secondary sexual characteristics, and sexual behavior.

Mullerian-Inhibiting Hormone

A hormone responsible for the regression of Mullerian ducts in the male embryo, crucial for male sex differentiation.

Reproductive Structures

Reproductive structures are specialized organs and tissues in organisms that are involved in reproduction, including testes in males and ovaries in females among others.