In 2010, American Society's Median Age Was Almost _____, Up

question 31

Multiple Choice

In 2010, American society's median age was almost _____, up from 30 in 1980.

• A) 34
• B) 36
• C) 38
• D) 40

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Definitions:

Air Pollution

The presence of substances in the air that are harmful to human health, the environment, or the climate.

Boreal Forest

A large biome of coniferous forest located in the northern regions of North America, Europe, and Asia, characterized by cold temperatures and short growing seasons.

Lichens

Symbiotic organisms composed of a fungus and a photosynthetic partner, often an alga or cyanobacterium.

Photochemical Oxidant

Chemical compounds formed by the reaction between sunlight and pollutants like hydrocarbons and nitrogen oxides, contributing to air pollution and smog.