Salinity of the ocean:
is generally very low

changes with climate

decreases with increase in temperature

increases where a river meets the ocean

Question

Salinity of the ocean:
 is generally very low

 changes with climate

 decreases with increase in temperature

 increases where a river meets the ocean

blues · Answer

You should use process of elimination for this: identify any which strike you as being impossible right off the bat. Which ones do you think it probably isn't?

anonymous · Answer

i would eliminate the first and last options

blues · Answer

Me too. Of the remaining ones, salinity is not affected by temperature. You can make a glass of salt water, heat it, and it is still as salty as it was when you started. So you can scratch the third option off the list as well. Which leaves...

anonymous · Answer

so it changes with climate?

blues · Answer

That is what you have got left. :D So you see the general process for approaching questions like this - scratch out the impossible ones, then consider the possibilities that leaves for scientific plausibility?

anonymous · Answer

yeah, thanks. :) i figured it would be that one but wasnt sure. thanks for your help.

blues · Answer

Not a prob. :)