Biology KS3 & KS4: Pregnancy and multiple births

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Written by uk homeschool

https://www.bbc.co.uk/teach/class-clips-video/science-biology-ks3-ks4-gcse-pregnancy-and-multiple-births/z6pgwty

https://www.elephango.com/index.cfm/pg/k12learning/lcid/13381/Identical_and_Fraternal_Twins:_What%27s_the_Difference?

Click to access Teachers-guide.pdf

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