what is evolution
the biological change process when descendants come to differ from their ancestors.
A species
a group of organisms that can reproduce and have fertile offspring.
Linnaeus
classification system from kingdom to species
Buffon
species shared ancestors rather than arising seperately
Darwim
more-complex form developed from less-complex forms.
Lamarck
environmental change leads to use or disuse of a structure.
Catastrophism
natural disasters that shape landforms and cause species to become extinct.
Gradualism
changes in landforms that have resulted from slow changes over a long period of time.
Uniformitarianism
the most common theory of geologic change. The geological processes that shape earth are uniform through time.
Variation
a difference in a physical trait
Examples including tortoises
Galapagos tortoises that live in areas with tall plants that have long necks and legs.
Examples including finches
Galapagos finches that live in area with hard-shelled nuts have strong beaks
Adaptation
a feature that allows an organism to survive better in its environment.
Fossil evidence of evolution
he found fossils of extinct animals that look like modern animals, and found fossil shells high up in the Andes Mountains
Geologic evidence that proves evolution
Darwin saw land move from underwater to above sea level due to an earthquake.
Artificial selection
the process where humans select breeding
Heritability
the ability of a trait to be passed down.
How is struggle for survival caused
due to overpopulation and limited resources.
