Bacteria in soil convert atmospheric nitrogen into a form usable by plants.
Bamboos are vigorous, rugged plants.
Bacteria in soil convert atmospheric nitrogen into a form usable by bamboo.
Bacteria in soil convert atmospheric nitrogen into a form usable by what?
Options:
1) bacteria
2) human babies
3) food
4) humans
5) lions
6) bamboo
7) Conifers
8) rocks