Chordates have a complete digestive system and a closed circulatory system, and yep, lizards are chordates, just like humans. Given these facts, what have a complete digestive system and closed circulatory system among the following options:
- protist
 - sharks
 - cows
 - lizards
 - mammals
 - viruses
 - crocodiles
 - bacteria


 

    lizards     