Conservation & biodiversity (Edexcel GCSE Biology): Flashcards

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Conservation & biodiversity
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Biodiversity

Variety of living organisms in an ecosystem

Interdependence in ecosystems

Species depend on each other for food, shelter & environment

Effect of higher biodiversity on stability

More stable - multiple species can perform similar roles

Biological resources from biodiversity

Provides food & medicines for humans

How biodiverse ecosystems affect climate

Store carbon & regulate climate

Local benefit: biodiversity & tourism

High biodiversity areas attract tourism & recreation

Examples of ecosystem services

Pollination, water purification, soil fertility

Reforestation

Replanting land where forest previously stood

Why forests have high biodiversity

Variety of trees/plants provide food & shelter for animals

Conservation: protecting natural habitat

Gives species a place to live & breed

Seed banks purpose

Store & distribute seeds of rare/endangered plants

How conservation protects food supply

E.g. programmes ensure future generations will have fish

Conservation & food chains

If one species goes extinct, affects all it eats or is eaten by

Breeding programmes purpose

Prevent endangered species from extinction

Recycling benefit for biodiversity

Reduces land for waste, conserves resources & reduces pollution

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