Chitin.
hi
Temperature & salinity.
no, because they are amune to it
Yes. It does.
Three factors are evaporation and freezing of sea water.
Ocean currents,The sun,and human activities
I Don't know, did not research.
Ocean currents,The sun,and human activities
The temperature of ocean water can be affected by the depth. The deeper it gets, the colder the temperature. The current also can affect the temperature of ocean water.
The life in the ocean would change and so would the gravity in the ocean. Therefore salinity is very important.
Ocean currents,The sun,and human activities