Zdroje:

https://referaty.atlas.sk/prirodne-vedy/biologia-a-geologia/42467/cuch

https://referaty.atlas.sk/prirodne-vedy/biologia-geologia//zmysly

https://www.google.sk/imgres.https://www.bio-che.szm.com/jazyk

https://www.google.sk/imgres.https://www.bio-che.szm.com/ust

https://www.percepcia.szm.com/cuch.html

https://sk.wikipedia.org/wiki/Zrak

https://www.wikipedia.sk/zrak

https://www.biologia.sk/cuch

https://www.zmysly.sk

https://www.telo.sk

Časopis: Novohradské noviny