US EPA The mission of the U.S. Environmental Protection Agency is to protect human health and to safeguard the natural environment - air, water, and land - upon which life depends.
(US EPA; is; to protect human health and to safeguard the natural environment - air, water, and land - upon which life depends) (US EPA; to protect; human health) (US EPA; to to safeguard; the natural environment - air, water, and land - upon which life depends)
US EPA US EPA US EPA
is to protect to to safeguard
to protect human health and to safeguard the natural environment - air, water, and land - upon which life depends
human health
the natural environment - air, water, and land - upon which life depends