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Living things
The living animal
Extinct and endangered animals
Animal ID
Insects
Ageing and senescence
Quiz: how much do you know about life processes?
Peppered Moth natural selection experiments
Sensing Evolution
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What is a fossil?
The history of life
Invertebrate ID
Quiz: how well do you know fossil invertebrates?
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The rock cycle
Quiz: how well do you know minerals?
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Animals-correct-2
Animals-correct-2
Congratulations! You are right!
Birds' front legs, or 'arms', have evolved and changed into wings.
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