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17 Cards in this Set

  • Front
  • Back
Evolution
CHANGES in an organism over time
Adaptation
When an organism changes to survive in its environment
Charles Darwin
Noticed that the finches(birds) on different islands had different beaks. This means they ADAPTED to their environments.
Competition
When organisms are going after the same resource. (food, land)
Diversity
different kinds of organisms
DNA
differences in DNA provide the key to diversity in all organisms.
Fossil
the remains of organisms. THESE ARE THE BEST EVIDENCE OF EVOLUTION.
What is the best evidence of evolution?
Fossils.
Galapagos Islands
Islands where Charles Darwin observed the adaptations of finches.
Habitat
A place where an organism lives.
Homologous Structures
Structures that do the same job in different species. (A 5 fingered limb on a human and in a Dolphin's fin)
Natural Selection
Individuals that can adapt (change) to fit their environment will survive and reproduce.
Species
A group of similar organisms that can reproduce with each other.
Variation
Differences within the same species (male and female humans)
What brings on evolution?
1. Movement of individuals in and out of a population.
2. Changes in climate.
How fast does evolution occur?
Very slowly
Evidence to support evolution:
1. fossil evidence
2. similar anatomy
3. DNA