An acute myocardial infarction (AMI) occurs when: Group of answer choices myocardial tissue dies secondary to an absence of oxygen. the entire left ventricle is damaged and cannot pump blood. the heart muscle progressively weakens and dysfunctions. coronary artery dilation decreases blood flow to the heart.

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.