You are presented with the question "what has freshwater that contains little or no salt?" and the following answer choices: 
- our planet
 - sweat
 - swamp vegetation
 - ocean
 - NaCl
 - aqueous solution
 - solid, liquid, gas
 - global ecosystems

Now knowing that freshwater biomes have water that contains little or no salt and biomes are global ecosystems, choose the best answer.


 

        global ecosystems 