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The Abyssal Zone is one of the many benthic zones we have highlighted to describe the deep oceans. This particular zone is found at depths of 2, to 6, meters 6, to 19, feet and stays in perpetual darkness.
Just below the abyssal zone and extending to the bottoms of the deepest trenches is the hadal zone. Very few animals exist in this habitat. Just above the abyssal zone is the bathyal zone and just above that the photic zone where much of the oceans life exists. Pressure Because water pressure increases one atmosphere every 33 feet in depth, animals in the abyssal zone must be able to withstand tremendous amounts of pressure.
This pressure makes it very difficult for humans to explore the deep ocean. For example, the deep Marianas trench off of the Philipeans is almost completely unexplored. The only submersable that has made these depths is the French bathyscaph Trieste.
Animals Animals in the deep ocean are unique. Because food is scarce in this zone most animals have large gaps to injest any possible food.
A great example of this is the deep-sea anglerfish. In many ways the deep sea is about eat or be eaten. Other deep sea animals include the infamous giant squid, black swallower, tripod fish.
Chemosynthesis, the basis of life in the deep sea A remarkable find when submersables starting probing the deep sea was the presence of extraordinary abundance of life around mid-ocean vents.
Previously, scientists believed that little lived at these emense depths. The only food that would have been avaliable was through dead animals floating down from the surface waters.
So what was this abundance sustaining itself on? The answer came from the discovery that bacteria in the vents were able to convert hydrogen sulfide coming out of the vents into energy. These bacteria then supported large tube worms, crustaceans, and multitudes of other organisms.
The most amazing part of this find was that science had found organisms whose primary energy source was not the sun. It was previously thought that life depended on photosynthesis, converting sunlight to energy. This new find spured questions about how life arose on planet earth.
Could it have started through chemosynthesis? Expeditions to the Seafloor Dive and Discover: It is used by the crew in the field to prepare video.Start studying Chemosynthesis vocabulary.
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What Is a Null Hypothesis? A hypothesis is a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can. Photosynthesis and chemosynthesis both contain water and oxygen in the reactions involved.
Photosynthesis’s chemical formula is 6H2O+6CO2—-C6H12O6+6O2. The chemical formula for chemosynthesis is 6CO 2 +6H 2 .
1 C h e h m h o hs yntihhh ofrCshlhamDmo e c Chemosynthesis for the Classroom (adapted from the Expedition to the Deep Slope ) Lessons from the Deep.
Chapter overview. 5 weeks. Learners are introduced to the basic concepts of ecology and the four levels in which ecological interactions are grouped for research and studying purposes.