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evolution of biodiversity notes
- Exam (elaborations) • 6 pages • 2021
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Chapter 5: Evolution of Biodiversity 
 
Species Diversity 
•	Ecosystem diversity: the variety of ecosystems 
•	Species diversity: the variety of species within an ecosystem 
•	Genetic diversity: variety of genes within a given species 
o	Diversity of genes helps determine species diversity and ecosystem diversity on earth 
 
How Many Species Live on Earth? 
•	To date, scientists have named approx. 2 mil., there are probably many more 
•	Other estimates range from 5mil-10mil, but
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