British Columbia

Québec

None

A map highlights the high-pressure regions in North America with a letter H enclosed in a circle. Near Columbia Kootenay Mountain and, near Ottawa.

A region where atmospheric pressure at the surface is greater than surrounding areas

High Pressure

North America

NOAA

Alabama

Michigan

Pennsylvania

New York

Minnesota

A world map shows major iron-producing areas (shaded red) in North America. In Canada: eastern Quebec near Labrador, Vancouver Island, and British Columbia. In the United States: Northern New York, eastern Pennsylvania, Alabama, and Minnesota.

Locations of major iron-producing areas in North America

Major Iron-Producing Areas

USGS

Major Iron-Producing Areas in North America

Arizona

Utah

Idaho

Wyoming

Montana

Texas

Missouri

Oregon

New Mexico

Nevada

California

A world map shows nitrate mining locations marked by orange circles with "N." Key areas include the U S, Mexico, Chile, and Spain. Major clusters are in the U S (western states), Mexico, and northern Chile's Atacama Desert.

Nitrate Mines

World

Anthropogenic Biomes

Areas at Risk of Soil Degradation

Average Annual Precipitation

Biomes

Climate Zones

Global Mean Temperature, January

Global Mean Temperature, July

Global Surface Warming: Worst-Case Projections (NASA)

Insolation

Land Cover

Major Soil Orders

Prevailing Agricultural Practices

World Elevations

MapMaster 3

High Pressure