Nyanja ndi njira yothandizira moyo wapadziko lapansi. Nyanjayi imayang’anira kutentha, nyengo, ndi nyengo. Nyanja yamoyo imayang'anira mapangidwe a mapulaneti; imayendetsa kutentha; amatulutsa mpweya wambiri m'nyanja ndi mumlengalenga; imayendetsa kayendedwe ka madzi, carbon, ndi nitrogen. Imasunga 97% ya madzi a Dziko Lapansi ndi 97% ya biosphere….Lipoti Lathunthu.