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Access Prior Knowledge Lesson 3: How do changes make more changes?. Opening Activity O pen Science textbook to page 174. Open Science Workbook to page 57A to check home learning. Open Science folder to review vocabulary words and outline for the chapter.
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Access Prior Knowledge Lesson 3: How do changes make more changes? Opening Activity Open Science textbook to page 174. Open Science Workbook to page 57A to check home learning. Open Science folder to review vocabulary words and outline for the chapter. Open Science journal and answer the following questions: 1. Give some examples of structural and behavioral adaptations? Review Content Cards and Q-Cards in bin, sharing with partners quizzing each other quietly. Log in to clickers using student ID number. Be ready to review home learning when timer goes off. Don't forget to write your home learning in your agenda page 58A.
Do you agree with the statement? 1 Organisms can adapt to harmful changes in their ecosystem. Yes No
Do you agree with the statement? 2 Once organisms lose their habitats, they can never find new homes. Yes No
Do you agree with the statement? 3 An extinct species has limited numbers of its kind. Yes No
Do you agree with the statement? 4 Poisons in ecosystems can travel through the food chain. Yes No
Changes in Behavior Animals may change their behavior because there has been a change in the kinds or numbers of other animals in their ecosystem.
Changes in Populations People can control the mosquito population by using a poison chemical called pesticide to kill mosquitoes decreasing the population rapidly. Some populations of mosquitoes have developed adaptations to changes in their ecosystem. Some bacteria cause diseases and can also adapt to changes in their environment making it harder to treat. Antibiotics are medicines that can kill these bacteria, but some bacteria are able to survive because they adapt to living around antibiotics passing their genes to their offspring. Third paragraph pg. 174
Extinction A species that has no members of its kind alive is extinct. Fossils provide scientists with evidence on past extinctions as well as allow them to learn about the past. The dodo bird is extinct because it couldn’t move to safety and the Bald Eagle almost became extinct because of a pesticide called DDT that washed into lakes and contaminated the fish. First paragraph pg. 176 Extinction
MatchQuest Cause Effect Spraying pesticide to kill mosquitoes. Creating antibiotics that kill disease- causing bacteria. Building cities where wild animals live. When many bacteria develop adaptations to antibiotic, the medicine no longer works. Large birds like hawks and falcons make thier homes now on tops of large buildings. Some will adapt to pesticide, have genes that allow them to live around the poison and reproduce.
TextQuest Answer questions in your Science Journal. 1. Why do some bacteria become resistant to antibiotics? 2. How did the Bald Eagle become endangered? 3. How does spraying pesticides on crops affect insect populations? 4. When are organisms considered extinct? Don't forget to write your home learning in your agenda page 58A.
