However, humans continue to modify the environment to their own ends, often with little regard for the ecosystem as a whole and the most effective conservation measures are still legislative controls upon polluting activities.
(humans; continue; ) (humans; to modify; the environment; to their own ends) (the most effective conservation measures; are; T:still; legislative controls upon polluting activities)
humans humans the most effective conservation measures
continue to modify are
the environment to their own ends
T:still legislative controls upon polluting activities