Natural Science - UNIT: Human body and reproduction - LESSON: SEX CELLS and FERTILIZATION
NATURAL SCIENCE - UNIT: Human body and reproduction
LESSON: SEX CELLS AND FERTILIZATION
Let's remember the song that we learned:
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Do you know how many sperms try to reach the ovule?... About 300.000.000... YES! 3 hundred million!!... Do you know how many get inside the egg...? Well, only 1... Here's how that happens:
