Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Heard and McDonald Islands' has mentioned 'Volcanic' in the following places:
Occurrence Sentence Text Source
The Territory of Heard Island and McDonald Islands[1][2] (HIMI[3]) is an Australian external territory comprising a volcanic group of mostly barren Antarctic islands, about two-thirds of the way from Madagascar to Antarctica.
It has a maximum elevation of 2,745 metres (9,006xc2xa0ft) at Mawson Peak, the historically active volcanic summit of Big Ben.
Some wetland areas have been recorded on McDonald Island but, due to substantial volcanic activity since the last landing was made in 1980, their present extent is unknown.
Volcanic activity has altered the distribution and abundance of the vegetation.
Nineteen species of birds have been recorded as breeding on Heard Island[32] and the McDonald Islands, although recent volcanic activity at the McDonald Islands in the last decade is likely to have reduced vegetated and un-vegetated nesting areas.
Heard Island is a heavily glaciated, subantarctic volcanic island located in the Southern Ocean, roughly 4000 kilometers southwest of Australia.
Between 1949 and 1954, marked changes were observed to have occurred in the ice formations above 5000 feet on the southwestern slopes of Big Ben, possibly as a result of volcanic activity.
Volcanic activity Southward movement of the Antarctic Convergence: such a movement conceivably might cause glacier retreat through a rise in sea and air temperatures Climatic change
Heard and McDonald Islands are remote sub-Antarctic volcanic islands located in the southern Indian Ocean about half-way between Australia and South Africa, and just over 1,600 kilometres from Antarctica.