Noun
preservation and careful management of resources
The organizers behind Earth Hour urge people to turn off lights in a symbolic show of support for action against climate change and for energy conservation.
Noun
state or quality of being different or varied
Scientists were flabbergasted at the discovery of cryptomycota, newly discovered life forms related to fungi but with enough diversity to be considered their own category.
Noun
science of the relationship between animals and their environment
ecology
Cities are often viewed as environmental wastelands, where only the hardiest of species can eke out an existence. But as scientists in urban ecology have found, more and more animals are establishing footholds.
Adjective
related in such a way that each needs or depends on the other
The cycle of wildlife is so interdependent that an alteration in one place is bound to have consequences elsewhere. We can't predict the consequences of allowing genetically modified animals loose on the world.