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Learn Bio w Eslam

IGCSE Biology question:
the placenta ensures the mixing of the mother's and fetus's blood to allow efficient exchange of substances such as oxygen, nutrients, carbon dioxide, and urea

1 week ago | [YT] | 0

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Learn Bio w Eslam

IGCSE Biology question:
The process of respiration PRODUCES energy

3 weeks ago | [YT] | 0

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