Marka la eego cutubyada ku saabsan Hydrogen-ka dabiiciga ah, waa maxay?
Context:Hydrogen-ka dabiiciga ah (oo loo yaqaanno hydrogen cad), waa hydrogen-ka molikal ee dabiiciga ah ee ka dhaca dhulka ama dhulka (marka loo eego hydrogen-ka lagu soo saaray shaybaarka ama warshadaha). Magaca 'haydrojiniga cad' wuxuu ka soocayaa hydrogen-ka cagaaran, kaas oo laga soo saaro ilaha tamarta la cusboonaysiin karo, iyo hydrogen-ka cawlan, bunni ama madow, kaas oo laga helo ilaha macdanta ama ka soo baxa korontada biyaha. Hydrogen-ka dabiiciga ah wuxuu noqon karaa mid dib loo cusbooneysiin karo, oo aan wasakheyn, wuxuuna u oggolaanayaa hawlgal kharash yar marka loo eego hydrogen-ka warshadaha. Hydrogen-ka dabiiciga ah waxaa lagu ogaadey dhagaxyo badan oo laga helo meelaha ka baxsan saldhigyada meelaha ay shirkadaha shidaalku sida caadiga ah ka shaqeeyaan.  Asalka hydrogen dabiiciga ah Waxaa jira dhowr ilood oo dabiici ah oo hydrogen ah:  - ka saarista gaaska qoto dheer ee hydrogen-ka ee dhulka iyo dhulka; - falcelinta biyaha ee dhagaxyada ultrabasic (serpentinisation); - biyaha oo la xiriira waxyaabaha hoos u dhiga ee ku jira dhulka; - isdhexgalka biyaha iyo dusha sare ee dhagaxyada cusub ee la soo bandhigay (cagaarista); - burburka ionka hydroxyl ee qaab dhismeedka macdanta; - Radiolysis dabiiciga ah ee biyaha; - burburka maaddada dabiiciga ah; - Waxqabadka noolaha Ka saarida - Hydrogenka dabiiciga ah waxaa laga soo saaraa ceelasha, waxaana lagu qasi karaa gaas kale sida nitrogen ama helium.  Dhowr ilood ayaa laga helay Faransiiska. Khubarada cilmiga dhulka Alain Prinzhofer iyo Eric Derville waxay cadeeyeen jiritaanka kaydad waaweyn oo ku yaalla wadamo dhowr ah, oo ay ku jiraan Mali iyo Mareykanka. Si kastaba ha ahaatee, weli way adag tahay in la qiimeeyo awoodooda.  Waxaa la ogaadey in baddan oo ka mid ah meelahaasi ay ka soo baxaan, balse way adagtahay in laga faa'iidaysto. Daahfurka soo ifbaxaya ee muhiimka ah ee Ruushka sanadkii 2008 wuxuu soo jeedinayaa suurtagalnimada soo saarista hydrogen-ka hooyo ee deegaannada juqraafiyeed.  cilmiga dhulka Hydrogen-ka dabiiciga ah waxaa si joogto ah looga soo saaraa ilo dabiici ah oo kala duwan. Waxaa jira meelo badan oo biyo-mareen ah oo ku yaalla badaha dhexe. Waxyeelo kale oo la yaqaanno waa dabaysha oo ku dhacda dhulka hoostiisa (badda).  Asalka Diagenetic (oxydation iron) ee saldhigyada sedimentary ee cratons, gaar ahaan Russia. Waxaa jira ilo kale oo la baaray, sida hydrogen-ka mantle-ka, ama hydrogen ka soo baxa radiolysis (electrolysis dabiici ah) ama waxqabadka bakteeriyada. Faransiiska, Alps iyo Pyrenees waxay ku haboon yihiin ka faa'iideysiga. New Caledonia waxay leedahay ilo biyood oo alkaline ah oo muujinaya qiiqa dihydrogen. Bourakebougou (Mali) waxaa laga helay biyo badan oo dabiici ah.  Sifooyinka Dihydrogen wuxuu ku milmaa biyaha macaan, gaar ahaan qoto dheer (xalka wuxuu kordhaa cadaadiska).  https://en.wikipedia.org/wiki/Natural_hydrogen
Hydrogen-ka dabiiciga ah (oo loo yaqaanno hydrogen cad), waa hydrogen-ka molikal ee dabiiciga ah ee ka dhaca dhulka ama dhulka (marka loo eego hydrogen-ka lagu soo saaray shaybaarka ama warshadaha).