| Table of contents |
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| 1. Types of Biodiversity |
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| 2. Causes of Loss of Biodiversity: The Evil Quartet |
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| 3. Why Should We Conserve Biodiversity? |
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| 4. In-Situ Conservation |
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| 5. Ex-Situ Conservation |
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Let's make your cramming journey easy to memorise with mnemonics.

Mnemonic: "Great Species Exist"
Mnemonic Explanation
Mnemonic: "Huge Overgrown Aliens Coexist"
Mnemonic Explanation
Each word represents a primary cause:
It is grouped into 3 categories

Mnemonic: "Nature Brings Eternal Value"
Mnemonic Explanation
Each word stands for one of the categories:
- Nature - Narrowly utilitarian (direct economic benefits like food, medicines, and materials)
- Brings - Broadly utilitarian (ecosystem services like oxygen production and pollination)
- Eternal - Ethical (moral duty to preserve biodiversity for its intrinsic value)
Mnemonic: "Hot Biospheres Naturally Secure Sacred Life"
Mnemonic Explanation
Each part represents an in situ conservation approach:
- Hot - Hotspots (biodiversity hotspots with high species richness)
- Biospheres - Biosphere reserves
- Naturally - National parks
- Secure - Sanctuaries
- Sacred - Sacred groves
- Life - Reminds us of the goal: to protect biodiversity and life forms.

Mnemonic: "Zoo Babies Cry for Seeds"
Mnemonic Explanation
Each word represents a method of ex situ conservation:
- Zoo - Zoological parks
- Babies - Botanical gardens
- Cry - Cryopreservation (preserving gametes)
- Seeds - Seed banks
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59 videos|290 docs|168 tests
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| 1. What are the different types of biodiversity? | ![]() |
| 2. What is "The Evil Quartet" in the context of biodiversity loss? | ![]() |
| 3. Why is it important to conserve biodiversity? | ![]() |
| 4. What is in-situ conservation, and how does it work? | ![]() |
| 5. What are some methods of ex-situ conservation? | ![]() |