both

Popularity (by total correct streak): 9
Popularity (by number of users): 3

Cards

Pyrolobus extreme heat dwelling organism  
Halobacteria Salt Loving bacteria  
Thermoplasma Cell wall less archeaon, grows at ph<1  
Eukaryotic Diplomonads, trichomonads, algae, fungi, protozoa  
Lichens mutual relationship between fungus and phototroph  

Quisition is a browser-based flashcard system that repeats old cards and introduces new ones at optimal time intervals. You can create your own card packs or use those developed by others.