Vocabulary: gametes, viviparous, oviparous, ovoviviparous
Most animals reproduce sexually.
Remember the first feature of sexual reproduction is that it involves 2 organisms.
So, just like a sports team, what does each "team member" have to do? What does each member provide or bring to the "game"?
I would add that the "sex cells" that the YouTuber mentions in this video can also be called "gametes( pronounced 'gah - meets' ).
Gametes are what each of the two organisms involved in sexual reproduction must "bring to the game".
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