Biodiversity, variety of life, Evolution, change in a group of organisms over time, Biogeography, study of how organisms are distributed on Earth, Geographic barrier, mountains or water that separate populations, causing speciation, Speciation, formation of a new species, Homologous structures, similar bone structures indicate common ancestor, Molecular comparative biochemistry, similar amino acid sequences indicate common ancestor, Developmental comparative embryology, similar development from egg to birth indicates common ancestor, Fossil record, collection of fossils showing change over time, Common ancestor, species that multiple species evolved from, Adaptation, inherited trait increasing survival chance, Behavioral adaptation, what an organism does to survive, Structural adaptation, physical trait an organism has to survive, Natural selection, best-adapted traits survive and reproduce, Fitness, ability to survive and reproduce, Genetic drift (Founder Effect), new population created from a small group of organisms that moved away, results in less variation, Genetic drift (Bottleneck Effect), disaster leaves few survivors, rebuilding a population results in less variation, Gene flow, movement and breeding between populations increases variation, Gradualism, slow gradual changes over time, Punctuated equilibrium, short period of rapid change, Stasis, long period without change, Phylogenetic tree, diagram of evolutionary relationships, Support, give evidence for, Compare, show similarities, Contrast, show differences, Significant, important, Cladogram, , Dendrogram, .

Strand 3 - Evolution

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