GCSE Biology - How Humans Reduce Biodiversity

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*** 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 ***






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