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https://www.earthsciweek.org/classroom-activities/cracked-plates-tectonics.
Diunduh pada 24 Juni 2021

https://www.nationalgeographic.com/environment/oceans/take-action/marine-
food-chain/. Diunduh tanggal 13 November 2020.

https://www.nationalgeographic.org/encyclopedia/plankton/. Diunduh tanggal
13 November 2020.

https://www.nidcd.nih.gov/health/cochlear-implants. Diunduh tanggal 21
November 2020.

https://www.niddk.nih.gov/health-information/digestive-diseases/digestive-
system-how-it-works

https://www.sciencelearn.org.nz/resources/59-investigating-refraction-and-
spearfishin. Diunduh tanggal 20 November 2020.

https://zerowaste.id/manajemen-sampah/mengompos-itu-mudah-banget/.
Diunduh tanggal 16 November 2020.

http://www.oseanografi.lipi.go.id/shownews/131. Diunduh tanggal 2 Februari

2021.

Mariinda, Leny. Teori Perkembangan Kognitif Jean Piaget dan Problematikanya
Pada Anak Usia Sekolah Dasar. Progam Pascasarjana IAIN Jember Prodi
PGMI. Diakses pada tanggal 11 Juli 2021. https://media.neliti.com/media/
publications/340203-teori-perkembangan-kognitif-jean-piaget-00d2756c.
pdf

Willett, Walter C., and Meir J. Stampfer. “REBUILDING the Food Pyramid.”
Americ no Diak

2021. http://www.jstor.org/stable/26060127.

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