BIOL 1001 Chapter : Chapter 30 Conservation
Document Summary
Biodiversity - the amazing variety of living organisms that inhabit earth. Most are named species are animals, but most of the organisms are probably not animals! Conservation biologists study biodiversity and seek to conserve it at these different levels: Ecosystem services (what other species do for us)- fig. In 1997, an international team calculated that ecosystem services provide _______________ in benefits to humanity yearly twice the world"s gross national product. The 2005, another team concluded that ______________________________________________ and used in an unsustainable fashion. New york city water supply from the catskills mountains. But, it was being polluted by sewage and agricultural runoff. ________________________________________________ than to build a water purification plant. The city purchased large tracts of land, keeping them in a reasonably natural state. Most biologists believe that _____________________ are now causing a sixth mass extinction. The current extinction rate is ____________________________________________________ in the absence of humans.
