bacteria in soil converts atmospheric nitrogen into a form usable by what?
bacteria humans density Conifers Roundworms gravity h2o orchids
A B C D E F G H
Many orchids are rewarding indoor plants.
bacteria in soil converts atmospheric nitrogen into a form usable by orchids
bacteria in soil converts atmospheric nitrogen into a form usable by what? (A) bacteria (B) humans (C) density (D) Conifers (E) Roundworms (F) gravity (G) h2o (H) orchids