7.2.4: Impact of environmental change (biology only) (HT only)
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Not started yet — this one needs some love.
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Environmental changes affect the distribution of species in an ecosystem.
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Environmental changes include temperature, availability of water and composition of atmospheric gases.
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Environmental changes may be seasonal, geographic or caused by human interaction.
Common exam mistakes
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Do not assume every distribution change is caused by humans; some changes are seasonal or geographic.
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A correlation in distribution data is not proof of causation.
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Use the information given in the question rather than importing a memorised global warming answer.
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Distribution means where organisms are found, not just how many there are.