What
Species, Genetics, and Ecosystem Diversity
Coastal mountain ranges Mississippi River Valley Denver Baltimore San Francisco Las Vegas St. Louis Coastal mountain ranges Sierra Nevada Great American Desert Rocky Mountains Great Plains Mississippi River Valley Appalachian Mountains Figure 4.5: The major biomes found along the 39th parallel across the United States are shown in this diagram. The differences in tree and other plant species reflect changes in climate, mainly differences in average annual precipitation and temperature. Coastal chaparral and scrub Coniferous forest Desert Coniferous forest Prairie grassland Deciduous forest
How
Natural Selection, Adaptation, Evolution
225 million years ago 135 million years ago 65 million years ago Present
Speciation, Geographic Isolation, Reproductive Isolation
Speciation, Geographic Isolation, Reproductive Isolation
Speciation, Geographic Isolation, Reproductive Isolation
Where
Why
Direct vs Indirect Value (to humans)
575
Biodiversity What How Where Why