Extinction and conservation

Species that find themselves at a selective ________ go extinct?

disadvantage
Species that find themselves at a _______ advantage evolve rapidly to fill the vacant ecological niches?

advantage
What is causing the current wave of extinction to run at a leve many times greater than the natural rate?

Human activities
The fastest mass extinction in Earth's history is largely due to:
- habitat destruction by humans
- overhunting of species and overexploitation of natural resources
- human overpopulation
- spread of agriculture
- pollution
Genetic diversity (biodiversity) is important to humans for:
- food
- medecines
- raw materials
- leisure, cultural and aestetic value
- supply of alternative alleles in order to improve vigour an disease resistance in domesticated plants
How can we protect genetic diversity?
- National parks / wildlife reserves
- Rare breed farm
- Captive breeding
- Cell (gene) banks
Which of these are on site?

National parks and wildlife reserves
Which of these are off site?

Rare breed farms, captive breeding and cell (gene) banks

Author

Anonymous

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Card Set

Extinction and conservation

Description

Higher Biology - Unit Two - Extinction and conservation

Updated

2012-01-23T18:09:11Z

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