If cardiac ischemia lasts too long, the starved heart tissue dies. This is a heart attack, otherwise known as a myocardial infarction -- literally, death of heart muscle..ost heart attacks occur during several hours -- so never wait to seek help if you think a heart attack is beginning. In some cases there are no symptoms at all, but most heart attacks produce some chest pain. Other signs of a heart attack include shortness of breath, dizziness, faintness, or nausea.
About Krakatoa Volcano. Krakatoa, also known as Krakatau is a small island volcano found in Indonesia, between Java and Sumatra, in the Sunda Strait. For more than 200 years Krakatoa was a quiet, little-noticed island with no eruption occurring.bout Krakatoa Volcano. Krakatoa, also known as Krakatau is a small island volcano found in Indonesia, between Java and Sumatra, in the Sunda Strait. For more than 200 years Krakatoa was a quiet, little-noticed island with no eruption occurring.
The Kamchatka Peninsula is the northern link in the 2000 km Kuril-Kamchatka island arc. This region contains 68 active volcanoes, over 10 percent of the total found on land anywhere on Earth. This arc is part of the Ring of Fire, a string of volcanoes that encircles the Pacific Ocean. The existence of the Ring of Fire is explained by the theory of plate tectonics.