Arizona

Utah

District of Columbia

Florida

Idaho

New Hampshire

Rhode Island

Vermont

Washington

Wyoming

Montana

Maine

North Dakota

Kentucky

Virginia

Delaware

Mississippi

West Virginia

Nebraska

Texas

Missouri

Louisiana

North Carolina

Oregon

Alabama

New Mexico

Kansas

Wisconsin

New Jersey

South Carolina

Michigan

Connecticut

Pennsylvania

Colorado

Nevada

Massachusetts

Georgia

New York

Maryland

Oklahoma

Tennessee

California

Arkansas

South Dakota

Ohio

Indiana

Minnesota

Iowa

Illinois

None

A map shows the p H levels of acid rain in the U.S. States like Ohio and Pennsylvania have the lowest p H levels (4.50 to 4.59 p H, black). States like Arizona and Nevada show the highest p H levels (greater than or equals 5.30 p H, light yellow).

Average acidity of precipitation in the United States. Lower pH values represent greater acidity.

Acid Rain (U.S.)

United States

Geosystems: Intro to Physical Geography

Acid Rain

Ontario

A world map shows global terrorist attacks. The highest concentration of attacks is in regions such as the Middle East, Northern Africa, and South Asia. Areas with fewer attacks (sparse points) include North America, South America, and Australia.

The deadliest acts of terrorism from 1970 to 2016. These violent acts were aimed at attaining a political, economic, religious, or social goal, and there is evidence of an intention to coerce, intimidate, or convey some other message to a larger audience (or audiences) than the immediate victims.

Global Terrorist Attacks

World

Global Terrorism Database

Alaska

Alberta

British Columbia

Hawaii

Manitoba

New Brunswick

Newfoundland and Labrador

Northwest Territories

Nova Scotia

Nunavut

Prince Edward Island

Québec

Saskatchewan

Yukon

A map shows corn production in the U.S. States like Iowa, Illinois, and South Dakota have the highest production (dark blue). States like Alaska, Utah, and Idaho show the lowest production (lighter blue).

Annual corn production in North America by state or province

US / CA States

North America

USDA

Corn Production

Metric tons

Sea-surface temperature anomalies during El Niño. The most intense warming (2 to 2.25 degrees Celsius, dark brown) occurs off the coast of South America. Cooler areas (negative 2.25 to negative 2 degrees Celsius, dark blue) are in the Arctic Ocean.

A composite of sea-surface temperature anomalies during El Niño from November to March during the following years: 1958, 1966, 1973, 1983, 1987, 1992, 1996, and 1998. When sea-surface temperatures in the tropical eastern Pacific rise well above normal, it is known as an El Niño event.

Sea-Surface Temperature Anomalies: El Niño

Oceans

NOAA

Change in degrees Celsius (°C)

A map highlights the regions of the world with areas affected by wind erosion highlighted in dark red and water erosion-affected areas highlighted in dark blue.

Areas of soil degradation where human activities result in high or very high levels of water and wind erosion

Soil Erosion

In North America, wind erosion significantly impacts the Great Plains in southern Canada and the adjacent northern Great Plains of the United States. This issue extends to the southern plains, affecting regions in Colorado, Kansas, Oklahoma, Texas, and New Mexico. Water erosion is prevalent in the eastern plains, the Midwest, parts of the Mississippi River Valley, Michigan, southern Ontario, and the mountainous areas of Pennsylvania, Maryland, and West Virginia. In the western United States, water erosion affects parts of California and eastern Washington, while wind erosion is notable in the deserts of southern California, Arizona, and Nevada. Western Mexico faces water erosion along its length, which continues through Central America to Panama and includes major Caribbean islands like Cuba, Jamaica, Haiti, and the Dominican Republic. Wind erosion is also observed in northern Mexico. In South America, water erosion is prominent along the Andes mountains from Venezuela to Bolivia, in central Chile south of Santiago, and along Brazil's Atlantic coast from Recife southward to southeastern areas. The southern Andes of Bolivia and northern Chile experience wind erosion, as does east-central Brazil. Northwestern Europe sees minimal soil erosion, but water erosion does occur in Spain, southeastern and central Europe, and western Russia, extending into Siberia in Asia. Ukraine and southern Russia are susceptible to wind erosion. In North Africa, wind erosion affects the northern Sahara from Algeria to western Egypt and extends across the Sahel from Mauritania to Sudan. Sub-Saharan Africa has scattered water erosion patches in West Africa, Sudan, Ethiopia, Kenya, Uganda, Tanzania, southern Africa (notably South Africa), and Madagascar. Southwest Asia experiences widespread wind erosion on the Arabian Peninsula and in Iran, while water erosion impacts Turkey, northern Iran, Yemen, and southern Oman. Central Asia faces water erosion in northwestern Kazakhstan and Afghanistan. In South Asia, northwest India deals with wind erosion, whereas water erosion is widespread across India, Sri Lanka, Nepal, and parts of Bangladesh. Southeast Asia encounters extensive water erosion in Myanmar, Thailand, Vietnam, Malaysia, the Philippines, and Indonesia (particularly Borneo and Java). East Asia experiences water erosion in large parts of eastern China and wind erosion in northern China, eastern Mongolia, and various areas in western China. In Oceania, small areas of water erosion are found in eastern and western Australia, Vanuatu, and New Zealand’s North Island.

Display by:	Acid Rain									Global Terrorist Attacks	Corn Production			Sea-Surface Temperature Anomalies: El Niño					Soil Erosion
	4.50–4.59 pH	4.60–4.69 pH	4.70–4.79 pH	4.80–4.89 pH	4.90–4.99 pH	5.00–5.09 pH	5.10–5.19 pH	5.20–5.29 pH	≥5.30 pH	Global Terrorist Attacks	Class	Rank	Metric tons	-0.25 to 0.25	0.75 to 1.0	1.0 to 1.25	1.25 to 1.5	1.5 to 1.75	Wind erosion	Water erosion
District of Columbia			100%
Connecticut			49.9%	50.0%								58	0
Georgia				7.01%	3.21%	2.51%	3.47%					25	1,710,000
New Hampshire				72.0%	27.9%							50	0
Northwest Territories												57	0
Québec												16	3,560,000
South Carolina				33.6%	64.2%	2.08%						29	930,000
Vermont				95.7%	4.07%							49	0
Yukon												61	0
Alaska												54	0	0.318%
Florida				1.32%	13.8%	25.9%				1		36	233,000	0.596%
Rhode Island			2.00%	3.88%								56	0	4.64%
Nunavut												52	0	0.352%
Maine					17.3%	69.8%	10.8%					55	0	0.133%
Nova Scotia												45	47,700	0.847%
Delaware			17.4%	81.8%								31	721,000	0.762%
Prince Edward Island												62	0	1.25%		0.264%
North Carolina			1.35%	37.2%	1.72%	9.88%						21	2,510,000	0.319%
New Brunswick												47	42,900	0.522%
British Columbia												48	11,800	0.126%
Newfoundland and Labrador												51	0	0.392%
New Jersey		5.98%	36.6%	32.6%	23.7%							40	196,000	0.329%
Massachusetts				98.2%								60	0	1.78%
New York		4.25%	52.6%	35.3%								23	2,040,000	0.105%
Arizona								1.23%	98.8%			37	224,000						4.22%
Utah								1.69%	98.3%			44	67,100						0.308%
Idaho								4.63%	95.4%			33	604,000							3.94%
Washington								23.4%	70.9%			34	419,000	0.513%						36.9%
Wyoming									100%			38	218,000						6.47%	2.84%
Montana								9.26%	90.7%			39	196,000						17.8%
North Dakota									100%			12	8,880,000						95.1%	0.109%
Kentucky			1.72%	54.3%	1.61%	9.53%						14	5,350,000							5.48%
Virginia			3.50%	1.66%	15.4%							27	1,440,000	0.126%						7.05%
Saskatchewan												59	0						12.1%
Mississippi					14.3%	79.0%	5.27%					22	2,370,000							21.9%
West Virginia		7.63%	45.0%	12.8%	8.92%							41	149,000							11.5%
Nebraska									100%			4	37,000,000						0.826%	52.2%
Texas					8.53%	1.49%	4.74%	5.19%	56.4%	1		15	3,880,000	0.183%					23.3%	0.427%
Missouri						26.1%	26.9%	12.0%	34.2%			10	12,800,000							60.6%
Louisiana					41.6%	42.5%	8.80%	4.48%	2.23%			24	1,880,000	0.184%						1.69%
Hawaii												63	0	1.74%	1.20%	0.113%	0.444%	2.10%		57.1%
Oregon								2.68%	97.3%			35	271,000							5.56%
Alabama					84.6%	13.4%						30	869,000							7.26%
New Mexico								4.15%	91.3%			42	136,000						67.8%
Kansas									100%			9	13,000,000						12.3%	62.5%
Wisconsin						4.01%	46.8%	27.3%	21.3%			8	13,900,000							43.5%
Michigan				24.0%	10.0%	4.73%	13.3%					13	8,530,000							1.12%
Alberta												46	44,000						4.93%
Pennsylvania	3.58%	34.8%	29.1%	10.8%						1		19	2,990,000							25.9%
Colorado							1.85%	3.55%	88.3%			18	3,010,000						30.2%	6.74%
Nevada									100%			53	0						11.8%
Maryland			12.5%	29.8%	10.3%							26	1,590,000	0.874%						5.23%
Manitoba												28	1,330,000						6.10%
Oklahoma							2.73%	5.70%	91.6%	1		32	620,000						29.4%	17.9%
Tennessee			5.63%	19.5%	14.5%	3.55%						20	2,630,000							12.6%
Ontario										1		11	9,440,000							2.00%
California									99.7%			43	89,900	0.110%					19.7%	24.3%
Arkansas						17.5%	40.8%	7.44%	10.2%			17	3,050,000							4.12%
South Dakota									100%			6	16,800,000						48.9%	18.4%
Ohio	5.07%	9.56%	59.7%	23.0%								7	15,100,000							4.56%
Indiana			12.8%	4.37%	8.75%	5.18%						5	24,800,000							12.0%
Minnesota							2.86%	4.42%	92.3%			3	37,100,000						9.96%	35.6%
Iowa								1.50%	98.5%			1	63,000,000							100%
Illinois					39.9%	27.0%	15.0%	3.08%	9.73%			2	57,600,000							84.6%

MapMaster 3

Acid Rain