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Excrete
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Excretion
)
To get rid of waste
materials
from a creature.
Contents
1
References
1.1
AQA
1.2
Edexcel
1.3
OCR
References
AQA
Excretion, page 170, GCSE Biology; Student Book, Collins, AQA
Edexcel
Excretion, page 112, GCSE Combined Science, Pearson Edexcel
Excretion, page 162, GCSE Biology, Pearson, Edexcel
OCR
Excretion, page 139, Gateway GCSE Biology, Oxford, OCR