Cambridge IGCSE Biology (0610) - IGCSE Biology - Conservation (20.4)

🎓 IGCSE Biology - The Complete Course - https://www.tes.com/teaching-resource/resource-12989155 Cambridge IGCSE Chemistry - The Complete Course: 🎓 Complete Teaching Resource (including past exam questions and mark schemes organised by chapter): https://www.tes.com/teaching-resource/resource-13280954 🎓 Student resource (PDF only): https://www.tes.com/teaching-resource/resource-13245244 🎓 All the videos (the complete library on Patreon): https://www.patreon.com/igbiocomplete ☕️ Buy me a coffee - https://www.buymeacoffee.com/ArthurJohnParker Cambridge IGCSE Biology (0610/0970) Chapter 20 - Human influences on ecosystems Topic 20.4 - Conservation For exams in 2023, 2024 & 2025 (core and extended) As always this video follows the Cambridge syllabus exactly and contains absolutely everything you need to know for your final exam! My other channels: @igpecomplete - Cambridge IGCSE PE @ocrpecomplete - OCR GCSE PE Timestamps: 0:00 Contents 0:43 Sustainable resources 1:15 Reasons for extinction 2:16 How endangered species are conserved 3:06 Conservation of forests (extended) 3:38 Conservation of fish stocks (extended) 4:32 Reasons for conservation programmes (extended) 5:19 Artificial insemination (extended) 5:36 In vitro fertilisation (extended) 5:58 Risks to a species if its population size decreases (extended) Core content: - Describe a sustainable resource as one which is produced as rapidly as it is removed from the environment so that it does not run out. - State that some resources can be conserved and managed sustainably, limited to forests and fish stocks. - Explain why organisms become endangered or extinct, including: climate change, habitat destruction, hunting, overharvesting, pollution and introduced species. - Describe how endangered species can be conserved, limited to: (a) monitoring and protecting species and habitats, (b) education, (c) captive breeding programmes, (d) seed banks. Extended content: - Explain how forests can be conserved using: education, protected areas, quotas and replanting. - Explain how fish stocks can be conserved using: education, closed seasons, protected areas, controlled net types and mesh size, quotas and monitoring. - Describe the reasons for conservation programmes, limited to: (a) maintaining or increasing biodiversity, (b) reducing extinction, (c) protecting vulnerable ecosystems, (d) maintaining ecosystem functions, limited to nutrient cycling and resource provision, including food, drugs, fuel and genes. - Describe the use of artificial insemination (AI) and in vitro fertilisation (IVF) in captive breeding programmes. - Explain the risks to a species if its population size decreases, reducing genetic variation (knowledge of genetic drift is not required).