During the Decade of the 1920s,the Distribution of Income

question 51

Multiple Choice

During the decade of the 1920s,the distribution of income

• A) became increasingly equal.
• B) changed little or not at all.
• C) became increasingly unequal.
• D) may or may not have changed, but it is difficult to know because of lack of data.

Understand the concepts of emigration, immigration, and migration in population dynamics.

Identify the role of predation, disease, and competition in natural population control.

Understand the dynamics of population change and factors affecting it in a natural ecosystem.

Identify different population control mechanisms and their effects.