SUMBER GAMBAR DAN VIDEO
Solomon, Eldra P; Martin, Charles E; Martin, Diana W; Berg, Linda. R.
2019. Biology Eleventh Edition. United States of America: Cengange.
https://youtu.be/pHIWJfz8748
https://youtu.be/jQwEiehL8k0
https://www.youtube.com/watch?v=nhCTqKVYn1I
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