The Table Below Lists the Populations, in Thousands, of Several

question 47

Multiple Choice

The table below lists the populations, in thousands, of several rural western counties. Wh: median population?
$\begin{array}{cc}\hline \text { County } & \text { Population (thousands) } \\\hline \text { Aldridge } & 27 \\\text { Cleveland } & 25 \\\text { McCarthy } & 24 \\\text { Pope } & 11 \\\text { Sorrell } & 15 \\\text { Wilson } & 19\end{array}$ is the

• A) 16 thousand
• B) 20.2 thousand
• C) 19 thousand
• D) 21.5 thousand

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Definitions:

Chorion

Outermost extraembryonic membrane of amniotes; major component of the placenta in placental mammals.

Epidermis

Outermost tissue layer. In animals, the epithelial layer of skin. In plants, the dermal tissue.

Mesoderm

Middle tissue layer of a three-layered animal embryo.

Ectoderm

Outermost tissue layer of an animal embryo.