Human Activities Affect the Phosphorus Cycle by Greatly Increasing the Amount

question 27

True/False

Human activities affect the phosphorus cycle by greatly increasing the amount of phosphorus stored in the earth, reducing the amount available for plant growth.

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Definitions:

Selective Gene Expression

This describes the process by which certain genes are activated to produce a specific set of proteins in different cell types, conditions, or stages of development.

Cell Differentiation

The process by which a less specialized cell becomes a more specialized cell type, crucial in development and specialization of functions.

Embryo

In animals, a developing individual from first cleavage until hatching or birth; in humans, usually refers to an individual during weeks 2 to 8 of development.

Human Motivation

The psychological forces that determine the direction of a person's behavior in an organization, a person's level of effort, and a person's level of persistence.