Seaweed
Eukarya
The opposite of bottom would be the top, so the oceans surface is the opposite of the ocean floor/bottom.
That would be the Pacific Ocean.
That would be the Pacific Ocean.
A cat.
nothing
Well I believe it would be the Atlantic, because if you go all the way until the shore the first ocean you would hit would be the Atlantic
yes you wold
No.
An organism that doesn't require oxygen to survive. Examples of anaerobic bacteria would be E. Coli, which produces the botulism toxin when in an anaerobic environment, tetanus, which is the bacteria responsible for producing the toxin that causes lockjaw, as well as many bacterias and complex organism that live on the bottom of the ocean where oxygen is almost non-existent.
Sonar
The bottom of the ocean is colder. The sun heats the top of the ocean first and then heats lower. In a nutshell, the top of the ocean is warmer and the deeper you go the colder.