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The monotony of these sandstones is broken by a white layer full of well-preserved animal burrows (previously thought to be mangrove roots) and a layer of black mudstone above that. [10] When the cliffs of the Birket Qarun Formation are followed to the East, they are replaced by Gehannam Formation mudstones, indicating a change in water depth ...
Egypt's geographic location played a major role in the variety and population of birds in Egypt. Migrating Eurasian birds exhausted from their long journey come to rest in the wetlands of the Nile delta. Ancient Egyptians capitalized from the large flocks of birds and hunted them either for food, offerings to the dead and gods.
Limnology (/ l ɪ m ˈ n ɒ l ə dʒ i / lim-NOL-ə-jee; from Ancient Greek λίμνη (límnē) 'lake' and -λογία 'study of') is the study of inland aquatic ecosystems. [1] The study of limnology includes aspects of the biological , chemical , physical , and geological characteristics of fresh and saline , natural and man-made bodies of ...
The limnetic zone is the open and well-lit area of a freestanding body of fresh water, such as a lake or pond. Not included in this area is the littoral zone, which is the shallow, near-shore area of the water body. The key difference between the littoral zone and the limnetic zone is the presence of rooted plant growth. [1]
Robert Brier (/ ˈ b r aɪ. ər /; born December 13, 1943) is an American Egyptologist specializing in paleopathology.A senior research fellow at Long Island University/LIU Post, he has researched and published on mummies and the mummification process and has appeared in many Discovery Civilization, TLC Network, and National Geographic documentaries, primarily on ancient Egypt.
Many animals can glow in the dark. In a new study, scientists report that deep-sea corals that lived 540 million years ago may have been the first animals to glow, far earlier than previously thought.
National Geographic Channel Expedition Mars: Spirit and Opportunity 16 November 2016 Before the Flood: 21 October 2016 Drain the Ocean: WWII 19 September 2016 9/11: The Plane That Hit the Pentagon 10 September 2016 Mega Hammerhead 26 June 2016 Nat Geo Wild Sharkatratz 26 June 2016 Drain the Titanic 5 May 2016 National Geographic Channel
The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from the Ancient Greek word βένθος ( bénthos ), meaning "the depths". [ 1 ]