You are presented with the question "Organisms in a marine biome must be be adapted to what in the water?" and the following answer choices: 
- mud
 - Nutrients
 - sodium
 - toxins
 - motion
 - sugar
 - energy
 - an anion

Now knowing that organisms that live in marine biomes must be adapted to the salt in the water and another name for salt is sodium, choose the best answer.


 

   sodium      