'Background extinction' presentation slideshows

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Statistical Mechanics and Evolutionary Theory

Statistical Mechanics and Evolutionary Theory. Lloyd Demetrius Harvard University, Cambridge, Mass., USA And Max Planck Institute, Berlin, Germany. Evolutionary changes in morphological complexity. Ecological time scale (Single evolving lineage) Increases and decreases in adult body size

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Mass Extinction!

Mass Extinction!.

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Mass Extinction!

Mass Extinction!.

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EXTINCTION

587 views • 48 slides

Biodiversity and Evolution

Biodiversity and Evolution. Chapter 4. Three Big Ideas. Populations evolve when genes mutate and give some individuals genetic traits that enhance their abilities to survive and to produce offspring with these traits (natural selection).

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Evidence for Evolution

Evidence for Evolution. Species Numbers. Exploration brought increased realization of the ENORMOUS NUMBER OF SPECIES in the world. Fossil Evidence. Similar fossils were found in geographically isolated locations. Fossil Evidence. Fossil Evidence.

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Conservation strategies

Conservation strategies. Class 5 Presentation 1. Background. Biodiversity is distributed unevenly on this planet Human activity causing spp extinction rates up to 1,000 x higher than background extinction rate

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8 th Grade Science

8 th Grade Science. Unit 8: Changes Over Time Lesson 1: Natural Events Contribute to Extinction Vocabulary of Instruction. Mass extinction is the process in which a huge numbers of species die out suddenly.

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19.2 Patterns of Evolution

19.2 Patterns of Evolution. H1N1 Swine FLU VIRUS. Macroevolutionary patterns - large scale evolutionary changes that occur over millions of years. Extinctions. Mass extinction - many species become extinct over a short period of time

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3.3 Threats to Biodiversity

3.3 Threats to Biodiversity. Habitat Loss (most significant threat to biodiversity) Occurs when events alter an ecosystem so much that many species can no longer survive there. a) Deforestation Occurs when forests are logged or cleared for human use and are not replanted .

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Evolution and Biodiversity: Origins, Niches, and Adaptations

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Do Now

138 views • 6 slides