Caecilians can be found in moist soil near rivers and streams in tropical regions, and caecilians belong to the order Apoda or Gymnophiona. Given these facts, members of the Apoda order can be found in _. among the following options:
- rivers in tundra regions.
 - They have webbed feet
 - female sex cells
 - epidermis and dermis
 - rivers in arid regions.
 - streams in arid regions.
 - microorganisms
 - streams in tropical regions


 

        streams in tropical regions 