This Figure Shows That the Human Population Was Small and Relatively

question 51

Multiple Choice

This figure shows that the human population was small and relatively stable for nearly 12,000 years but has increased dramatically in the past 200 years.How might this increase in population growth be explained?

• A)Disease prevented any significant growth of the human population.
• B)For most of human history people were too malnourished to have children.
• C)People simply chose to have fewer children in the past than at present.
• D)Prior human populations were at existing carrying capacities but newly developed technologies have raised the carrying capacity and permitted the recent expansion.

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Definitions:

Skeletal Muscle

Muscle tissue that is attached to bones and is responsible for voluntary movements of the body.

Voluntary

Actions or movements that are under conscious control, often referring to the contraction of skeletal muscles.

Myoblasts

Precursor cells that are responsible for muscle development through the process of differentiation and fusion to form muscle fibers.

Erythrocytes

Red blood cells, which carry oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.