Ihe dị ka 30-40% nke CO2 agbakwunyere na-etinye obi gị dum site na oke osimiri, na-akpụ carbonic acid ma na-ebelata pH (ugbu a n'okpuru 8.1) site na usoro a na-akpọ acidification oke osimiri. A na-atụ anya na pH ga-eru 7.7 (na-anọchite anya mmụba nke 3 na hydrogen ion concentration) site na afọ 2100, nke bụ mgbanwe dị ịrịba ama na otu narị afọ. Otu ihe dị mkpa maka nhazi nke ihe ọkpụkpụ na ụmụ anụmanụ mmiri bụ calcium carbonate, ma calcium carbonate na-aghọ ihe na-edozi ahụ na nrụgide, ya mere carbon carbon na skeletons na-agbaze n'okpuru omimi ya. Calcium carbonate na-aghọkwa ihe dị mkpa na pH dị ala, ya mere acidification nke oke osimiri nwere ike inwe mmetụta miri emi na calcium, na-akpụzi carbonic acid ma belata pH (ugbu n'okpuru 8.1) site na usoro a na-akpọ acidification oke osimiri. A na-atụ anya na pH ga-eru 7.7 (na-anọchite anya mmụba nke
8.2 Ihe