https://or.khanacademy.org/science/nas-grade-8-science/xd4e827862f97a0d8:grade-9/xd4e827862f97a0d8:untitled-22/e/formation-of-soil 2026-04-08T15:53:17.03241881Z ମୃତ୍ତିକା ଗଠନ ଆସ କିଛି ପ୍ରଶ୍ନର ଉତ୍ତର ନିରୂପଣ କରିବା vibhor exercise https://or.khanacademy.org/science/nas-grade-8-science/xd4e827862f97a0d8:grade-9/xd4e827862f97a0d8:untitled-22/e/natural-resources 2026-04-08T15:53:17.03241881Z ପ୍ରାକୃତି ସମ୍ପଦ ଆସ କିଛି ପ୍ରଶ୍ନର ଉତ୍ତର ନିରୂପଣ କରିବା vibhor exercise https://or.khanacademy.org/science/nas-grade-8-science/xd4e827862f97a0d8:grade-9/xd4e827862f97a0d8:untitled-22/e/conserving-water 2024-10-21T08:49:39.719738353Z ଜଳ ସଂରକ୍ଷଣ ଆସ କିଛି ପ୍ରଶ୍ନର ଉତ୍ତର ଦେବା । vibhor exercise