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Last updated on April 18, 2014 at 15:05 EDT

Earth Reference Libraries

Page 2 of about 56 Articles
Erosion
2013-04-01 12:48:39

Erosion is the process by which rock and soil are taken from the surface of the Earth by exogenetic processes like wind or the flow of water, and then transported and deposited in another location. While erosion is a natural process, human activities have increased by 10 to 40 times the rate at which erosion is happening globally. Excessive erosion results in problems such as...

Soil Salinity
2013-04-01 11:15:13

Soil salinity is the salt content within the soil; the process of increasing the content of salt is known as salination. Salt is a natural element of water and soils. Salination can be a result of natural processes such as the gradual withdrawal of an ocean or mineral weathering. It can be caused by artificial processes such as irrigation as well. Soils that are affected by salt are a result...

Current Sea Level Rise
2013-04-01 10:39:21

The sea levels all around the world are rising. Current sea-level rise has the potential to affect human populations and the natural environment. Two key factors have contributed to the observed sea level rise. The first is thermal expansion: as the ocean water warms, it expands. The second is from the influence of land-based ice because of increased melting. The major store of water on land...

Water Pollution
2013-03-25 12:43:15

Water pollution is the contamination of bodies of water including rivers, oceans, lakes, aquifers and groundwater. Water pollution is when pollutants are discharged directly or indirectly into a body of water without adequate treatment to remove harmful compounds. Water pollution affects the plants and organisms that reside in these bodies of water. In almost all of the cases the effect is...

Pacific Rim
2013-02-19 13:33:00

The Pacific Rim is a reference to places around the edge of Pacific Ocean. The term Pacific Basin includes the Pacific Rim and the islands within the Pacific Ocean. It roughly overlaps with the geologic Pacific Ring of Fire. These countries are generally considered to be a part of the Pacific Rim, since they lie along the Pacific Ocean: North/East Asia Russia, Japan, North Korea, South...

Asia
2013-02-19 13:06:23

Asia is the world’s largest and most populous continent. It is located mainly in the eastern and northern hemispheres covering 8.7 percent of the Earth’s whole surface area and making up 30 percent of its land area. With about 4.3 billion people, it hosts 60 percent of the world’s current human population. This continent has a high growth rate in the modern era. For example, during the...

North America
2013-02-18 15:40:12

North America is a continent completely within the Northern Hemisphere and almost completely within the Western Hemisphere. It’s also considered a northern subcontinent of the Americas. It’s bordered to the north by the Arctic Ocean, to the west and south by the Pacific Ocean, to the southeast by South America and the Caribbean Sea, and to the east by the Atlantic Ocean. This continent...

Australia
2013-02-18 13:27:43

Australia, officially the Commonwealth of Australia, is a country involving the mainland of the Australian continent, the island of Tasmania and a number of smaller islands. It’s the world’s sixth-largest country regarding to total area. Some of the neighboring countries include East Timor, Indonesia, and Papua New Guinea to the north; the Solomon Islands, New Caledonia and Vanuatu to the...

Africa
2013-02-18 11:10:17

As the world’s second-largest and second most populous continent, Africa is about 11.7 sq. miles including adjacent islands. It covers 6 percent of the Earth’s total surface area and 20.4 percent of the total land area. With 1 billion people, it accounts for about 15 percent of the world’s human population. It is surrounded by the Mediterranean Sea to the north, both the Suez Canal and...

Impact Of Growing Degree Days For Baltimore In March
2013-01-13 08:26:45

Growing Degree Days are another huge part of our lives even though we may not deal with them directly. Growing degree days have to deal with the growing of fruits and vegetables along with other various crops that are grown throughout the United States for our personal use. As we examine the Baltimore Maryland area we can see how the impacts of a normal, El-Nino and La-Nina cycle have an...