Evolution serves as the central unifying theory in biology that explains the emergence and ongoing adaptation of life on Earth. The chapter explores mechanisms such as natural selection that drive evolutionary changes and discusses the importance of biodiversity conservation. It emphasizes both scientific insights and ethical considerations in preserving the complex web of life, highlighting practical applications in conservation efforts.
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What we have learnt
- Evolution is driven by natu...
- Reproductive isolation lead...
- Quantifying biodiversity us...
Final Test
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What we have learnt
- Evolution is driven by natural selection, which favors advantageous traits within populations.
- Reproductive isolation leads to speciation, allowing for biodiversity to flourish.
- Quantifying biodiversity using various measures is essential for effective conservation strategies.
Key Concepts
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Term: Natural Selection
Definition: A mechanism of evolution where organisms better adapted to their environment tend to survive and reproduce more successfully.
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Term: Speciation
Definition: The process through which new species arise from a common ancestor due to evolutionary changes, often facilitated by geographic isolation or behavioral divergence.
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Term: Biodiversity
Definition: The variety of life on Earth at genetic, species, and ecosystem levels, encompassing the diversity of species and their relative abundance.
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Term: Conservation Biology
Definition: A field of study that seeks to understand and conserve Earth's biological heritage by applying ecological principles and understanding evolutionary processes.