4) underground sources is the best answer.
Oceans have saline not fresh water and morning dew would not be sufficient water.
Bro why do people pit the answers down in the question? It’s annoying as hell
First of all, the nucleotides of DNA and RNA are different: in DNA, in fact, pentose sugar is deoxyribose, while in RNA it is ribose, which has one more oxygen atom. Moreover, in DNA the nitrogen bases are adenine, cytosine, guanine and thymine while in RNA instead of thymine there is the uracil base
