Mašan awa ilan tekle ən efayan?
Taɣelit n efaday ilkam i almaɣna n awen Ad eha azuk n tisirad n aman daɣ efaday iman net Addobat deɣ asifham n iddikud i ad eha iddikud n adu, s ijjit net daɣ eɣaf A fal eqqal a fal tijja tijililwăyen n aman ɣas, efăgăn ilan tăɣelit n 0.5 gramma n aman daɣ 1 cubic meter 1 km3 ən ejareg ehay 1 milliard de mètres cubes. Awen amos 500 n milyon n gramma meɣ 500 n efdan n kg Awen ogdah id 1.1 n milyon n pounds meɣ 551 n ton tan n tiɣiswen n aman