In Bacteria and Archaea, young readers learn about the biology of bacteria and archaea, organisms too small to be seen with only the eyes. Students learn that bacteria are shaped like rods, spheres, or spirals and live alone or in colonies, and archaea come in different shapes and can live in very hot or very salty places.
 
Softcover, 8×8 in., 24 pages
Word Count 277,  Lexile Measure 470L
A pronunciation guide is included. Reading Level 1-3, Interest Level 2-5.