Oceans
The percentage of the earth's surface covered by oceans.
What is 71%
The most abundant salt found in ocean water.
What is Sodium Chloride (NaCl)?
In this life zone, organisms need to be able to cope with a great variability of conditions.
What is the intertidal zone?
The average of the ocean tides is used to find this.
What is the mean sea level?
This is a ring of land formed by coral reef in the ocean.
What is an atoll?
The largest ocean basin.
What is the Pacific Ocean?
This gas is more abundant in the lighted photic zone than in the dark abyss.
What is oxygen?
Organisms that live between the low tide mark at the shore and the edge of the continental shelf live in this zone.
What is the littoral zone?
Seawater is on average this salinity.
What is 3.5%?
or
What is 35 ppm?
The cyanobacteria are a key part of this cycle.
What is the nitrogen cycle?
Island arcs are most often associated with this (near subduction zones, where the oceanic crust goes under the continental crust).
What is oceanic trench?
Sea water temperature near the ocean bottom is this.
What is between 0 and 4 degrees celcius?
Also:
Varies little all over the world.
Animals that are attached to the ocean floor, or ones that live on the ocean bottom, are this kind of organism.
What is benthic?
Sections of the oceans that are mostly surrounded by land.
What is a sea?
Underwater ridges of rocklike structures formed by tiny organisms that support a large variety of life.
What is a coral reef?
This element is the main chemical building block for all living things.
What is carbon?
At 2000 m depth, this is the atm pressure.
What is 201.
Water in the bay is typically this.
What is less salty than the ocean?
or
What is brackish?
The shallow, submerged edge of a continent.
What is the continental shelf?
Organisms that are not attached to or do not live on the ocean floor are this type of organism.
What is pelagic?
The number of ocean basins worldwide.
What is five?
How sound in sea water travels in comparison to in the atmosphere.
What is travels faster than in air.
A seamount that has had its top flattened by wave erosion or another process.
What is a guyot?
Carbon in the atmosphere is typically in this form.
What is carbon dioxide?
Sediments precipitating to the ocean bottom, dead animals, and other microscopic debris that form the base for benthic animal's food chain are called this.
What is marine snow?