JMU BIO 150 Final Exam Correct Questions & Answers(GRADED A+)

Define biodiversity - ANSWER the diversity of plant and animal life in a particular habitat (or in the world as a whole) Define genetic diversity - ANSWER the total genetic information contained within all individuals of a species, population, or community Why is genetic diversity important? - ANSWER provides the raw materials for adaptive change Define adaptive change - ANSWER change in response to the environment's "natural selection: Define species diversity - ANSWER the diversity of species present in a community Why is species diversity important? - ANSWER species have a particular "role" in a system, so the addition or loss of a species may have consequences for the entire system How is species diversity measures? - ANSWER -species richness -species abundance Define species richness - ANSWER number of species in a community Define species abundance - ANSWER The number of individuals of each species Define ecosystem diversity - ANSWER measure of the variety of biotic components in a region along with abiotic components Why is ecosystem diversity important? - ANSWER ecosystem functioning is dependent on interacting member organisms with their environment Define system stability - ANSWER diverse systems are resilient after and resistant to disturbances Define ecosystem productivity - ANSWER diverse systems have higher net primary productivity Define ecosystem services - ANSWER direct and indirect benefits that humans derive from organisms and ecosystems Define existence value - ANSWER economic value of a system and our willingness to mitigate biodiversity loss