Extinction Reflective Learner Self Manager Effective Participator L.O: Understand how organisms can become extinct Grade 4: Describe what is meant by extinction & describe one way that an animal could become extinct. Grade 6: Describe how other organisms can cause an animal or plant to become extinct. Suggest a hypothesis for why an organism became extinct. Grade 8: Suggest alternative hypotheses for why an organism became extinct. Evaluate in detail the need to conserve endangered plants. Apply knowledge of speciation to explain why dodos were only found on one island. Reflective Learner Self Manager Effective Participator Independent Enquirer

Scientists estimate that 4billion species have existed on Earth Scientists estimate that 4billion species have existed on Earth. How many species do you think are still around today? THINK PAIR SHARE

Scientists estimate that 4 billion species have existed on Earth Scientists estimate that 4 billion species have existed on Earth. How many species do you think are still around today? 8.7 million

Sabre-toothed tigers and mammoths Extinct Species Sabre-toothed tigers and mammoths “Extinction” is when every member of a species dies out. Some examples: Dodo 21/04/2019

What could cause a species to become extinct? THINK PAIR SHARE

Task 1 Use pages 244 – 247 from Biology AQA book to help you. Grade 4: Copy and complete the paragraph on the ‘Extinction’ fill in the gaps & give examples of animals that have become extinct due to other organisms Grade 6: As grade 4 and describe one hypothesis about how the dinosaurs became extinct Grade 8: Stick in/copy the summary sheet and describe two hypotheses about how the dinosaurs became extinct

Extinction Words to use: deforestation, competition, dinosaurs, human, environment Extinction can happen due to an organism’s inability to adapt and die because of: Increased _______ New predators Changes in the _________ New diseases Alternatively, a “mass extinction event” can happen, for example the extinction of the __________. In modern days animals are in danger due to _____ activity, e.g. pollution, hunting, __________ etc… Oh no… 21/04/2019

Extinction Summary Write this down, or glue in your own copy Dodo

Self asses your answers using the mark scheme and your pink pen. Task 2 Grade 4: Complete the low or mid level exam question Grade 6: Complete the mid or high level exam question Grade 8: Complete the high level exam question Reflective Learner Self asses your answers using the mark scheme and your pink pen.

Extinction Reflective Learner Self Manager Effective Participator L.O: Understand how organisms can become extinct Grade 4: Describe what is meant by extinction & describe one way that an animal could become extinct. Grade 6: Describe how other organisms can cause an animal or plant to become extinct. Suggest a hypothesis for why an organism became extinct. Grade 8: Suggest alternative hypotheses for why an organism became extinct. Evaluate in detail the need to conserve endangered plants. Apply knowledge of speciation to explain why dodos were only found on one island. Reflective Learner Self Manager Effective Participator Independent Enquirer