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Which do you like better?
A B
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Which do you like better?
A B
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Which do you like better?
A B
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A B
Which do you like better?
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A B
Which do you like better?
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A B
Which do you like better?
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A B
Which do you like better?
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What do you think biodiversity means?
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Bio =
BioBiodiversitydiversity
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BioBiodiversitydiversity
Diversity = Variety
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Biodiversity is the variety of life on Earth and the essential interdependence of all living things
• Scientists have identified more than 2 million species.
• Tens of millions remain unknown.
• The tremendous variety of life on Earth is made possible by complex interactions among all living things including microorganisms.
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3 Levels of Biodiversity1. Genes
2. Species
3. Ecosystems
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1. Genetic Diversity Example: There are differences in dogs because of
differences in their genes.
ChihuahuaChihuahua BeagleBeagle RottweilerRottweiler
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Saki Monkey(animal)
Golden Skimmer(insect)
Meadow Beauty(plant)
2. Species Diversity Example: There are different organisms that live in
ecosystems.
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Marine Texas Grasslands
3. Ecosystem Diversity Example: There are different ecosystems that support
different forms of life.
Tundra
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Which is more diverse?
A B
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Which is more diverse?
A B
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Which is more diverse?
A B
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A B
Which is more diverse?
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A B
Which has more cultural diversity?
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A B
Which has more biodiversity?
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Which has more biodiversity?
A B
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Value = worth something
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What do we get from biodiversity?
Oxygen
Food
Clean Water
Medicine
Aesthetics
Ideas
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Should we be concerned about biodiversity?
What we know: The Earth is losing species at an alarming rate
Some scientists estimate that as many as 3 species per hour are going extinct and 20,000 extinctions occur each year.
When species of plants and animals go extinct, many other species are affected.
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Threats to biodiversity
Habitat destruction
Pollution
Species Introductions
Global Climate Change
Exploitation