Transcript Evolutionary Evidence Part 2 Biogeography.ppt

Evolutionary
Evidence
Part 2: Biogeography
Bellringer
In your science journal, write and respond to the
following question:
Using the fossil record shown in the figure above, explain
what has happened to the type of habitat found in the area
as time passed.
Objectives:
• I can define biogeography.
• I can explain why biogeography is an
important piece of evolutionary evidence.
• I can analyze a map of geographic regions
and determine where similar organisms
may live.
What are the different types of evidence used
to support the evolutionary theory?
There are several places we
can see indirect evidence of
evolution/evolutionary
relationships:
 fossils,
 biogeography
 similarities in
anatomy,
 biochemistry/DNA,
 and embryology.
What is biogeography?
• Biogeography is the study of the
distribution of organisms, species,
ecosystems, and biomes around
the world.
Why is biogeography important
to evolutionary evidence?
• Biogeographic distributions can aide in
analyzing and evaluating common ancestry
among organisms.
• Biogeography provides evidence that similar
environments can lead to the evolution of similar
animals, even if the environments are far apart.
• Darwin studied biogeography and the similarities
between organisms during his travels.
What are the factors that affect the distribution
of organisms and biological communities?
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habitat area
climate
soil composition
longitude
latitude
elevation
geological history of a region