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Transcript
Bell Ringer • Choose 5 vocabulary terms from your list and use them in complete sentences. Write these on a sheet of paper and save to turn in on Friday. Classification Recap from Yesterday • What are favorable traits? Unfavorable traits? • What is natural selection? • What are adaptations? Evolution in the Marine Environment • What is a species? • How do new species arise? • Rate of evolutionary change Evolution in the Marine Environment • All major animal phyla are found in the sea • At least 80% of all phyla include marine species • More ways to “make a living” in the ocean Evolution in the Marine Environment • Since physical conditions are relatively uniform, large animals tend to look the same. – Similar conditions tend to result in similar looking organisms – Traits are independently selected – Convergent evolution “The environment isn’t right for the organisms; rather, the organisms are right for the environment.” Classification of Oceanic Life • Taxonomy • Artificial System of Classification – Aristotle proposed grouping organisms based on external similarities Classification of Oceanic Life • Natural System of Classification • It’s what’s in use today. Why? – Common underlying natural origin Classification of Oceanic Life • Linnaeus – 3 kingdoms: animal, vegetable, & mineral • Dropped mineral & expanded the others into 6 • Linnaeus’ system was based on hierarchy Classification of Oceanic Life • Linnaeus perfect the naming technique using scientific name. Let’s Review!