Demonstrating How an Economic Variable Changes from One Year to the Next

question 178

Multiple Choice

Demonstrating how an economic variable changes from one year to the next is best illustrated by a

• A) one- variable graph.
• B) cross- section graph.
• C) time- series graph.
• D) linear graph.

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Definitions:

Epidermis

(1) An outer layer of cells that covers the body of plants and functions primarily for protection. (2) The outer layer of vertebrate skin.

Nematode

Unsegmented worms of the phylum Nematoda, including both parasitic and free-living species that can be found in various environments.

Ectoderm

The outer germ layer of the early embryo; gives rise to the skin and nervous system. Compare with mesoderm and endoderm.

Protostomes

Animals that belong to the Protostomia, one of the major animal clades. Include the annelids, arthropods, and mollusks. Compare with deuterostomes.