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Bio 4

Teacher: Rosa Parra
Across
Period where first amphibians appear
Era where reptiles appear
What occurs when plates move against each other
Similarity in function not due to a common ancestor
Formation of new species due to new opportunities
Similarity in structure due to a common ancestor
Period where Dinosaurs are most dominant
Southern portion of Pangaea
Period where modern man appears
"Period" where the first life on earth occurs
Down
Formation of new species due to geographic barrier
Period where mass extinction of marine life occurs
Period where first fishes appear
Era where mammals radiate
Artificial selection is selected by?
Type of cells that first appeared on earth 3.5bya
Formation of new species due to genetic mutation or reproductive isolation
Use homologies to map evolutionary relationships
Era containing cretaceous, Jurassic and Triassic period
Continents in one land mass