Evolution and Extinction
Subjects / Core Science / Edexcel GCSE Science
In this title, you will listen to theories of how organisms that we know about today may well have evolved over millions of years from single cells. You will also learn about different theories of evolution proposed by scientists from as long ago as the 1700s. Because organisms compete for resources, the ones that are the best adapted survive and this may eventually change the look of a species after many generations. This title explains why dinosaurs are not still roaming around the Earth, and why some people are still interested in their footprints. Finally, you will learn how organisms are preserved over millions of years and how some humans have been preserved in peat bogs.
| Author: | Phillipa Denham | Publisher: | GCSEPod® |
| Narrator: | Pauline Addis | ISBN: | 978-1-84906-290-9 |
| Video ISBN: | 978-1-84906-790-4 |
Chapters
- Adaptations
- Competition between Animals
- Competition between Plants
- Evolution
- The Theory of Evolution
- Fossils
- Extinction
Exam Board Relevance
- Edxcel
- AQA
- CEA
- IGCSE (EdExcel)
- OCR
- SQA
- WJEC
- IGCSE (CiE)
Includes original GCSEPod image art. Additional pictorial images created by Damon Smith
Curriculum and Exam Board Information
Key Issues
Titles
Chapters
- Adaptation allowing survival in particular conditions
- Competition controlling population size
- Evidence for evolution from fossils
- Evidence of evolution from fossils
- Evolution
- Evolution occurs via natural selection
- Evolution of new species
- Evolution or extinction by natural selection
- explain how recent scientific discoveries may change our understanding of evolution (evolution of flight in birds)
- explain how recent scientific discoveries may change our understanding of evolution (recent fossil discoveries by scientists changing evolutionary thinking, e.g., human evolution)
- explain how recent scientific discoveries may change our understanding of natural selection (questioned validity of peppered moth data)
- explain why natural selection could have led to evolution in a changing environment
- Extinction
- Extinction may be caused by changes to the environment
- Extinction may be caused by new competitors
- Extinction may be caused by new diseases
- Extinction may be caused by new predators
- Fossils
- Fossils provide evidence of how much (or how little) different organisms have changed since life developed on Earth
- individual organisms within a particular species may show a wide range of variation because of differences in their genes
- individuals with characteristics most suited to the environment are more likely to survive to breed successfully
- Interdependence of predator and prey
- interpret data on evidence for natural selection
- know that scientists use similarities and differences between organisms to classify and identify them
- know that sexual reproduction produces variation in the offspring
- Mutation
- Natural selection - evolution or extinction
- natural selection as variation within phenotypes and competition for resources leading to differential survival
- Relationships Between Species
- Selective breeding (artificial selection)
- Studying the similarities and differences between species helps us to understand evolutionary and ecological relationships
- the genes which have enabled these individuals to survive are then passed on to the next generation
- The theory of evolution states that all species of living things have evolved from simple life-forms which first developed more than three billion years ago
- Theory of Evolution
- understand how sexual reproduction produces variation in the offspring
- understand how variation and selection may lead to evolution or extinction
- understand that some variation is useful and enables organisms to survive in changing environments
- understand the principles of natural selection
- understand the use of artificial selection in plant and animal breeding leading to increased yield, food value
- Where new forms of a gene result from mutation there may be more rapid change in a species
Reviews
This podcast was helpful to me as I didn't understand this fully in the lesson and now it is really easy.
Madeleine S, Student
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