GCSE Biology - How Humans Reduce Biodiversity (2026/27 exams)

⭐️ Check out our website https://www.cognito.org/ ⭐️ ** WHAT'S COVERED ** 1. Understanding Biodiversity Definition as the variety of different species on Earth or within an ecosystem. Comparison of ecosystems with high and low biodiversity, for example, a rainforest versus a field. 2. The Importance of Biodiversity Its role in ensuring ecosystems are stable and resilient. Direct benefits to humans, such as pollination for food crops and the provision of resources for medicines. 3. Human Activities Threatening Biodiversity The impact of a rapidly growing human population and increased global consumption. Habitat destruction resulting from activities like deforestation and the clearing of land for resources. The consequences of over-exploiting natural resources, leading to species decline and extinction. Various forms of pollution affecting water, land, and air, and their sources including domestic, industrial, and agricultural waste. 4. Consequences of Reduced Biodiversity The direct harm to organisms and the disruption of ecological processes. An introduction to how human-generated waste and emissions, including greenhouse gases, contribute to environmental problems like global warming. ** CHAPTERS ** 0:00 Introduction 0:14 Defining Biodiversity 0:39 The Importance of Biodiversity 1:02 Pollination and Medical Drugs 1:31 Population Growth 2:03 Increased Consumption 2:38 Clearing Natural Ecosystems 2:56 Waste Production 3:11 Pollution's Impact 4:09 Greenhouse Gases and the Link to Global Warming ** PLAYLISTS **    • GCSE Maths (9-1)      • GCSE Biology (9-1)      • GCSE Chemistry (9-1)      • GCSE Physics (9-1)      • A-Level Biology   #GCSE #Biology #study #revision #school #exam #AQA #OCR #Edexcel #IGCSE