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Chapter 17 Biodiversity- Fill In

Chapter 17 Biodiversity- Fill In - Chapter17:...

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Chapter 17: Preserving Earth’s Biodiversity Section 1: Biological Diversity Biodiversity:  ____________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________ Genetic diversity (within a species)   Ecosystem diversity Three Components: What is the difference between genetic diversity and ecosystem diversity? Numbers: Estimated that there are between ____ to ____ million different species  (huge range!!!) _______ million have been named o 330,000 plants o 45,000 vertebrates o 950,000 insects  ________ new each year ________ species threatened with extinction ________% of earth’s land (19 million km 2 ) is set aside to protect  biodiversity Why do we need organisms??? 1. Ecosystem Services: Important environmental benefits such as clean air,  water, and fertile soil that ecosystems provide 2. Species richness: The environment can change if species are removed.  Explain what this statement means.
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3. Genetic reserves: Maintain broad genetic base for species long-term 
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