66 8 Unit 8 Lesson 4 Ask: did the Ask: did the Language 13 early horse groups go early horse groups precision to extinct? Climate go extinct? Climate reinforcing change and the change and the misconceptions. forests changed into forests changed grasslands; as such, into grasslands; as the early horses could such, the early not survive in this new horses did not habitat. have trait variants favorable to surviving the shifting environment. Only offspring with trait variants favorable to the changing conditions survived and reproduced, and the population evolved over time as these variations accumulated. 67 8 Unit 8 Lesson 4 Answers will vary. Answers will vary. Language 13 There is not one is not one precision to correct answer here, correct answer reinforcing but several here, but several misconceptions. hypotheses. One idea explanations. One is that they are very idea is that they well adapted and are very well have not needed to adapted and thus change. Another idea no change is is that their evident. Another environment has idea is that their been very stable, so it environment has has not encouraged been very stable, any evolutionary so there is no change. selection acting on the population.
66 8 Unit 8 Lesson 13 4 Ask: did the early horse groups go extinct? Climate change and the forests changed into grasslands; as such, the early horses could not survive in this new habitat. Ask: did the early horse groups go extinct? Climate change and the forests changed into grasslands; as such, the early horses did not have trait variants favorable to surviving the shifting environment. Only offspring with trait variants favorable to the changing conditions survived and reproduced, and the population evolved over time as these variations accumulated. Language precision to reinforcing misconceptions. 67 8 Unit 8 Lesson 13 4 Answers will vary. There is not one correct answer here, but several hypotheses. One idea is that they are very well adapted and have not needed to change. Another idea is that their environment has been very stable, so it has not encouraged any evolutionary change. Answers will vary. is not one correct answer here, but several explanations. One idea is that they are very well adapted and thus no change is evident. Another idea is that their environment has been very stable, so there is no selection acting on the population. Language precision to reinforcing misconceptions.
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