Video narration
Tober gacher pata ki shudhu surjer alo ney, naki gacher jonno kichu toiri kore? Bhabun, ei shobuj patatai gacher rannaghor. Ekhane rannar upokoron ashe tin dik theke: surjer alo, shikor diye otha pani, ar batas theke patay dhoka karbon dai oksaide. Patar shobuj ronjak alo dhore, ar shei alo babohar korei ranna shuru hoy. Pata shudhu alo shoson kore na, alo babohar kore pani o karbon dai oksaide theke gacher khabar toiri kore. Ei prokriyar nam saloksongshleshon. Ete toiri hoy glucose, gacher nijer khabar, ja tar bere othar kaje lage. Ar rannar shomoy toiri howa otirikto oksijen patar baire, batashe chere dey. Tai patake shobuj ongsho bhabben na; eti alo, pani ar bataske kaje lagano rannaghor. Mati gachke pani o khonij dey; khabar patay toiri hoy. Gach kivabe nijer khabar banay? Surjer alo, pani o karbon dai oksaide diye patay saloksongshleshone glucose toiri hoy, ar oksijen batashe beriye jay.