Fact 1: Running water is better able to dissolve oxygen and nutrients than standing water.

Fact 2: Large, warm rivers hold populations but few occur in cold running water.

Given the two facts above, answer the question "What can better dissolve nutrients and oxygen?" with the following options: 
- lakes
 - SO2
 - Raft
 - a solute
 - puddles
 - rivers
 - currents
 - lochs


 

      rivers   