How is a underwater cave most likely formed

Waves crashing against the base of a cliff can sometimes form a sea cave. Sea caves form along a crack in a rock or an area where the rock is softer. Because the abrasive action of waves is concentrated at the base of the cliff, an overhang forms. ... They are less commonly formed in harder rock such as granite.

Most caves are formed in limestone rock. Calcite (calcium carbonate) is the main mineral of limestone. ... This acidic water slowly dissolves the calcite, and carves tunnels and cavities. The resulting network of passages become fully submerged or underwater caves in the limestone rock.

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the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

b brown mice / white sand dunes