• REVIEW UNIT 3+4
     Help
  • What are things that make up soil?
    weathered rock, humus, minerals, air, and water
  • What happen when plants or animals die?
    They decompose into humus.
  • What happen when animals dig into the soil?
    They move humus down.
  • Unlock this slideshow and over 4 million more with Baamboozle+
    Try slideshows
    • Your experience on this site will be improved by allowing cookies.