_______________ Readers Read Standard Universal Product Code (UPC) Labels, Primarily

question 33

Short Answer

_______________ readers read standard Universal Product Code (UPC) labels, primarily to track inventory.

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Definitions:

Germ Layers

The three primary layers of cells (ectoderm, mesoderm, and endoderm) in the early embryo that give rise to all organs and tissues in the body.

Embryonic Disk

Point in the inner cell mass at which the embryo begins to be formed.

Ectoderm

Outermost of the three germ layers of an embryo.

Mesoderm

The middle layer of an embryo in early development, which gives rise to muscles, bones, and the circulatory system.