to save (i.e. water, electricity, money, time)
to save (i.e. a person or animal)
to save, to stow away (i.e. a document or thing)
to help
to cause
to preserve, to conserve, to keep
to pollute
to take care of
to destroy
to exploit
to participate
to prohibit
to protect
to recycle
to be happy
to regret
to bother
to be sorry
to be a shame
to fear
ecological
marine (i.e. sea related)
environmental
wild
sustainable