1 “... of the discovery was that the Archaea, previously thought to be a curious subgroup of bacteria restricted...”

2 “... of the discovery was that the Archaea, previously thought to be a curious subgroup of bacteria restricted...”

3 “... bacteria, archaea, viruses, and microbial eukaryotes--provides researchers insights into the processes...”

4 “... bacteria, archaea, viruses, and microbial eukaryotes--provides researchers insights into the processes...”