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Note-taking continued Lesson 2 Theory of Evolution by Natural Selection LA.6.2.2.3, SC.7.N.1.1, SC.7.L.15.2 Skim or scan the heading, boldfaced words, and pictures in the lesson. Identify or predict three facts you will learn from the lesson. Discuss your thoughts with a classmate. Organize information about Charles Darwin. Charles Darwin an English naturalist I found this on page 199 . What? developed a theory of how evolution works I found this on page 199 . When? mid-1800s I found this on page 200 . Where? voyaging around the world, with a particular focus on study of the Galapagos Islands I found this on page 200 . Why? drew conclusions from many years observing plants and animals in their natural habitats I found this on page 200 . How? aboard the HMS Beagle, a survey ship of the British Navy I found this on page 200 . 201 Intermediate Tortoise Saddleback Tortoise low vegetation low and high vegetation high vegetation Explain Darwin’s theory of the relationship among the tortoises . thought that all the tortoises came from a common Chapter Review mentioned above. Accept all reasonable responses. Sample answer: Darwin Chapter Review I found this on page Domed Tortoise Study Guide Darwin’s Theory Correlate species of tortoises with their food sources. Study Guide ancestor. However, each species had adapted (or changed) over time according to the food sources available on the island on which it was found. The Environment and Change Over Time The Environment and Change Over Time Benchmark Practice Benchmark Practice Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Who? Inquiry Lab . Note-taking 199 Inquiry Lab I found this on page Note-taking Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Charles Darwin 195 195 Note-taking continued Lesson 2 | Theory of Evolution by Natural Selection (continued) I found this on page 201 . Model variation. Draw several members of a species, and then explain how your drawing illustrates variation. Drawings should include multiple individuals of the same species with clearly varied physical traits. should point out the differences among individuals as Note-taking examples of variation. I found this on page 202 . Describe the process of natural selection that would result in the evolution of tortoises shown in picture 1 to those shown in picture 2. Inquiry Lab Picture 1 Sample answer: The food source in picture 1 is high vegetation. able to reach more food in that Study Guide Study Guide environment. Those tortoises will be stronger and more apt to survive and breed. They will pass on their traits, such as Chapter Review longer necks, to their offspring. Those offspring will repeat the cycle. Eventually, the weaker, shorter-necked turtles will die Benchmark Practice Benchmark Practice Chapter Review Picture 2 out, and all the turtles will have long necks, as shown in picture 2. 196 196 The Environment and Change Over Time The Environment and Change Over Time Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Tortoises with longer necks are Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Inquiry Lab Note-taking Explanation: Accept all reasonable responses. Student Note-taking continued Lesson 2 | Theory of Evolution by Natural Selection (continued) Adaptations I found this on page 203 Relate adaptations to natural selection. . Adaptations that make it easier for certain individuals to survive will spread throughout a population as those individuals are more likely to survive and reproduce. I found this on page 203 . Classify types of adaptations. Adaptations Examples: Examples: color, shape, and other physical characteristics hunting at night, moving in herds drop in body temperature, expanding blood vessels Camouflage • species blends with its environment Both • structural adaptations • help a species Artificial Selection I found this on page 205 Mimicry • one species resembles another • species stands out Study Guide avoid being eaten Inquiry Lab Compare and contrast camouflage and mimicry. Identify the process of breeding organisms for desired traits. . selective breeding , also known as artificial selection Accept all reasonable responses. Sample answer: Variations of physical Chapter Review Connect It Explain how physical variation is expressed in human beings and how it relates to cultural groups and ethnicity. Chapter Review characteristics in humans include hair color, skin tone, and eye shape. Because people have historically tended to produce offspring with mates who share traits similar to their own, large populations of people with like variations have evolved, forming ethnic groups. The Environment and Change Over Time The Environment and Change Over Time Benchmark Practice Benchmark Practice Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Type: Study Guide Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. functional Examples: Note-taking . behavioral Inquiry Lab 204 Type: structural Note-taking I found this on page Type: 197 197