Environmental change
What Environmental change means in Biology GCSE, as defined for AQA, OCR.
Definitions of Environmental change
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Reference: AQA
A change that can make conditions in an ecosystem more or less suitable, so species may spread into new areas, become restricted to smaller areas, or disappear locally.
A change in conditions such as temperature, availability of water or composition of atmospheric gases, which affects the distribution of species in an ecosystem.
Changes such as drought, failed rains, floods, storms or rising temperatures that can reduce yields and affect food production.
A change that directly shifts the geographical distribution of organisms across terrestrial and aquatic ecosystems.
A pressure to which populations of genetically identical offspring are vulnerable because they lack variation.
A shift in conditions that alters which phenotypes are best suited to survive.
Topics that use Environmental change
- Factors affecting food security (AQA GCSE)
- Impact of environmental change (biology only) (HT only) (AQA GCSE)
- Variation (AQA GCSE)
- Inheritance (OCR GCSE)
- Monitoring and maintaining the environment (OCR GCSE)
Related terms
- Genes
- Genome
- Phenotype
- Asexual reproduction
- atmospheric gases and water availability
- axis scaling
- biodiversity preservation
- bioindicator species
Using Environmental change in the exam
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