Intro to oceans - Hilary online test compilation B

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If a sediment's contents is 55% opaline silica, what is the sediment commonly termed
Siliceous Ooze
1 of 4
Why can phytoplankton not grow below depths of about 100-200 m
There is not enough light .
2 of 4
What is the main reason why water sinking in polar regions has a high oxygen concentration?
Mainly because the water is very cold and so the solubility of oxygen is enhanced
3 of 4
Why do dissolved oxygen concentrations decrease as deep water formed in the Atlantic ages during its transport to the Pacific Ocean?
Bacteria organisms use oxygen during respiration/decomposition of organic matter
4 of 4

Other cards in this set

Card 2

Front

Why can phytoplankton not grow below depths of about 100-200 m

Back

There is not enough light .

Card 3

Front

What is the main reason why water sinking in polar regions has a high oxygen concentration?

Back

Preview of the front of card 3

Card 4

Front

Why do dissolved oxygen concentrations decrease as deep water formed in the Atlantic ages during its transport to the Pacific Ocean?

Back

Preview of the front of card 4

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