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- What is the importance of biodiversity? Explain the nature and magnitude of mankind’s threats to biodiversity. Discuss existing and possible solutions, and their effectiveness.A realized niche describes the conditions of the environment in which a species is actually found, while a fundamental niche describes the potential environmental conditions tolerated by a species. True FalseWhat is an ecological footprint? Explain what is meantby the term overshoot.
- What is the complex link between ecological stability and species diversity? In eight sentences, discuss the topic.Define the niche concept. How does the “realized niche” of a popu-lation differ from its “fundamental niche”? How does the concept of niche differ from the concept of guild?Whichstatement about organisms’ “niches” is false?a.The niche summarizes environmental factors influencing growth, survival,and reproduction of a species.b.The niche concept was developed by Joseph Grinnell and Charles Elton.c.The “fundamental” niche refers to physical, but notbiological, aspects of the environment.d.Interactions such as competition and parasitism may restrict the size ofan organism’s niche.e.In the laboratory, two species with identical niches are especially easyto maintain in a mixed culture.