102Chapter4 - Chapter 4 Evolution, Biological Communities,...

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Unformatted text preview: Chapter 4 Evolution, Biological Communities, and Species Interactions Of course, long before you mature, most of you will be eaten. The pictures pretty bleak, gentlemen. The earths climate is changing, the mammals are taking over, and we all have brains the size of a walnut. Now this end is called the thagomizer, after the late Thag Simmons. Evolutions been good to you, Sid. Evolution Produces Species Diversity Natural Selection Leads to Evolution All Species Live Within Limits The Ecological Niche is a Species Role and Environment Large Grassland Herbivore North America: Pronghorn Africa: Antelope Australia: Large Kangaroos Speciation Maintains Species Diversity Exaptation There Are No Half-Evolved Organisms Every organism is adapted to its environment all the time Change happens when the environment changes Mass Extinctions Exotic Species Invasions Climate Change What Good is Half an Eye? What Does a Bug See?What Does a Bug See?...
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102Chapter4 - Chapter 4 Evolution, Biological Communities,...

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