In documenting the ensuing changes to the area's plant and animal life, the study has focused on two of the most representative species of the Sonoran Desert: the saguaro cactus and the desert tortoise.
(the study; has focused; on two of the most representative species of the Sonoran Desert; L:In documenting the ensuing changes to the area's plant and animal life)
the study
has focused
on two of the most representative species of the Sonoran Desert L:In documenting the ensuing changes to the area's plant and animal life