Download - 1.1 Biodiversity-An Introduction Pages 8-13. Biodiversity The number and variety of living things
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1.1 Biodiversity-An Introduction
Pages 8-13
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Biodiversity
• The number and variety of living things
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Species
• Members of a group of living things that can produce fertile offspring.
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Hybridization
• Plants of different species successfully reproduce.
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Morphology
• Plants, fungi and many microorganisms do not “breed” so we use physical characteristics to define species
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Evolutionary Changes
• Physical changes• Behavioural changes
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Genetic Diversity
• Range of traits among members of the same species
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Feeding
• Heterotrophs acquire nutrients from outside themselves
• Autotrophs make their own food through photosynthesis
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Species Diversity
• Variety of species• Number of individuals
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Structural diversity
• Physical shapes• Sizes• Distribution• Habitats• communities
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Biodiversity at Risk
• Food supply at risk• Medicines lost• Economic impact on tourism, forestry • Biogeochemical cycle disruptions