This seems like a desert almost devoid of life, and the only plants that project more than a few feet above the ground are the long-lived Joshua trees.
(This; seems; ) (the only plants; project; more than a few feet above the ground) (the only plants that project more than a few feet above the ground; are; the long-lived Joshua trees)
This the only plants the only plants that project more than a few feet above the ground
seems project are
more than a few feet above the ground
the long-lived Joshua trees