Pollutants Vary in Their Persistence , Which Means Some

question 65

Multiple Choice

Pollutants vary in their persistence , which means some .

• A) reside in the environment for thousands of years, whereas others last for only a few minutes
• B) are toxic to organisms in tiny concentrations
• C) may seem harmless, but could be very deadly to distant species
• D) may interfere directly or indirectly to marine populations

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Definitions:

Growth Rate

The rate at which a particular variable, such as an economy or a population, increases over a specified period.

Net Migration

Net effect of immigration and emigration on a particular population; expressed as an increase or decrease.

Demography

Study of the size, composition, distribution, and changes in human population.

United States Census

A nationwide survey conducted every ten years by the federal government to account for the population and gather demographic information used for various purposes, including political representation.