Aim: How did organisms like the birds of paradise get their traits? • Do Now: • 1) What are the two sources of variation? • 2) What factor has the greatest effect on evolutionary change? • 3) The shark has changed very little in 50 million years. Why do you think this is? Birds of Paradise • What traits are these birds exhibiting? • What adaptive value do you think they have? • Where could the traits have come from? Charles Darwin BrainPop • Brainpop Video Aim: How can we use questions from our test to improve our understanding of natural selection? Do Now: • Complete p.92 #36-40 in your review book. Ibex or “Mountain Goat” • What traits do you notice on these animals? • How are their adaptations useful? Test Analysis • Get into your group of 3-4. • For the following questions, you will analyze the answer choices: 9, 11, 14, 22, 24, 25, 28, 31, 32, 33 • On a separate sheet of paper, explain for each question: – Why the correct answer is correct. – Why the other answers are NOT correct.