The Bulk of Migration into the United States Has Recently

question 49

True/False

The bulk of migration into the United States has recently come from countries in South America.

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Definitions:

Zone of Cell Division

An area in plant roots or shoots where cells are actively dividing, contributing to growth in length.

Shoot Tip

The apex of the shoot of a plant, containing the apical meristem responsible for the plant's growth in length.

Pressure-flow Model

A hypothesis that explains how phloem sap (sucrose and other substances) moves through a plant from a source (where it's produced or stored) to a sink (where it's used or stored).

Cellular Respiration

A metabolic process that converts nutrients into energy (ATP) and waste products in the presence of oxygen, within the cells.