You are presented with the question "What are generally bigger and deeper than small fresh water ecosystems?" and the following answer choices: 
- puddles
 - wetland
 - complex
 - streams
 - lakes
 - rivers
 - creeks
 - fens

Now knowing that lakes are generally bigger and deeper than ponds and some of the best work in ecology has been done on small fresh water pond ecosystems, choose the best answer.


 

     lakes    