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An oceanographer studies water chemicals, underwater life and sediments all about the ocean and its inhabitants.
Squids live in all of the oceans of the world. Different types of squids live at different depths of whichever ocean they inhabit.
There is olivine within the mantle, but it typically occurs at shallower depths (less than 400 km) as at greater depths than this the pressure causes olivine to become unstable forming what are known as high pressure poly-morphs! These have the same chemical composition but a different crystal structure.
because it is too cold
The major environmental factor limiting the numbers of autotrophs at great depths in the ocean is the amount of light reaching those depths
going on a dive to collect different samples of ocean water at different depths
going on a dive to collect samples of ocean water at different depths
Nansen bottles
By Bringing up samples at different depths.
An oceanographer studies water chemicals, underwater life and sediments all about the ocean and its inhabitants.
Different species breed in different areas and at different depths.
because the subject may have different charactreistics at different depths
with the lateral fins
different heights and depths
There are a number of different depths for a number of different bits. The depth needed depends on the project.
hot because when its cold it turn hot
The Buchanan Water Sampler is an instrument used in the 1900 century to collect water samples from certain depths. The mechanism is attached to a line which is thrown over the side of a ship and when it gets to a certain depth (this is told from the numbers on the side of the line) the person holding the line sends a messenger ( a tiny mechanism sent to close the lid on the Sampler), then reals it up for testing.