Factors that limit life at different depths in aquatic life zones
By: Dr Pandula Siribaddana
Aquatic ecosystems are classified broadly into marine and fresh water ecosystems. The marine ecosystem covers around 71% of the earth’s surface while freshwater ecosystems cover around 0.8% of the earth’s surface. The life in aquatic ecosystems can be variable from one place...
By: Jose Juan Gutierrez
Coastal zones comprise a variety of life zones. Coastal wetlands provide habitat for a variety of plant and animal species. Two typical life zones found in a coastal zone include an estuary and a coastal wetland. Estuaries are enclosed areas of coastal water where ocean...
By: Jose Juan Gutierrez
Freshwater lakes are natural bodies of water formed due to rainfall, melting snow, or groundwater seepage in the Earth’s surface. Freshwater life zones are found in bodies of water of which the salt concentration is less than 1%. Approximately 1% of the Earth’s...
Factors that limit life at different depths in aquatic life zones
By: Colette Georgii
Limiting factors in aquatic life zones are sunlight, water temperature, oxygen, and nutrients. Depending on the amount of sunlight that filters through the water, the varying temperature of the water, and the amount of oxygen in the water; sea life will live or die according...
Factors that limit life at different depths in aquatic life zones
By: Gioia Degenaars
The ocean is filled with a variety of life. People are learning more and more about the Earth's great oceans as they are able to reach depths that were never possible before. They are finding life where they did not believe life was possible. The...
Estuaries and coastal wetlands: Where freshwater and saltwater mix
By: J. Lang Wood
Estuaries are narrow bodies of water that branch out from rivers and streams as they empty into larger bodies of water along coastal areas. Estuaries are generally surrounded by coastal wetlands, low areas of land that are saturated for all or much of the year...
Undersea volcanoes: Submarine mountains or guyots
By: Dean Traylor
The great Portuguese explorer, Ferdinand Magellan, had no idea what he was sailing on. In 1521, he reached a large body of water with favorable winds and calm seas. He named it Mar Pacifico (translated, “peaceful seas”). Little did he know that the...
By: Jose Juan Gutierrez
Submarine canyons are steep-sided valleys extending along the continental shelf and into the continental slopes. Some submarine canyons are extensions of rivers or continental faults. A continental shelf is the part of a continent that extends under the sea shore and into the deep-ocean floor...
The seven deadly seas
By: Dean Traylor
Mythologies from around the world are filled with tales of treacherous waters. And there’s no wonder why the ocean played a major part in the ancient people’s beliefs. Sea-faring cultures such as the Vikings, Greeks, Romans, and Phoenicians knew firsthand the dangers the...
By: Ari Diozon
Maelstroms are turbulent, swirling vortexes within bodies of water. From novels to movies, their chaotic power has inspired literature and entertainment for hundreds of years. They exist all over the world from the frigid Arctic Circle to lava islands of Hawaii. This guide explores the...

 

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