The tree provides a home and food for the caterpillar and gives off oxygen which is used by the caterpillar.
(The tree; provides; a home and food for the caterpillar) (The tree; gives off; oxygen which is used by the caterpillar) (oxygen; is used; by the caterpillar)
The tree The tree oxygen
provides gives off is used
a home and food for the caterpillar
oxygen which is used by the caterpillar
by the caterpillar