Fact 1: Chordates have a complete digestive system and a closed circulatory system. Fact 2: Because reptiles are vertebrates, they are chordates. Given the two facts above, answer the question "What have a complete digestive system and a closed circulatory system?" with the following options: - viruses - reptiles - phytoplankton - mammals - bacteria - graptolites - humans - elephants
reptiles