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Human Sperm, basic leve? At grade

Defines sperm and explains how it is produced.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Human Sper? At grade

Discusses how sperm are produced.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

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