The average starting wage of an apprentice is about 50% of a journey worker's rate of pay. Programs are required to progressively increase the apprentices wages provided the on-the-job training and school performance is satisfactory and in accordance with apprenticeship committee.
The Aleutian Trench formed as the Pacific Plate converged with the North American Plate forcing the Pacific's oceanic plate into the mantle because the Pacific Plate is denser than the North American Plate. The Aleutian Trench and other Trenches formed a subduction zone by converging with other plate tectonics.
This zone marks the interface where the denser Pacific oceanic plate subducts beneath the less dense continental North American plate. As the subducted plate descends, the heat from the earth's interior causes the plate to begin melting, and buoyant liquid magma rises to the surface forming a line of volcanoes. subduction zone, composed of the deep Aleutian Trench coupled with a landward line of volcanoes, creates a series of offshore islands (the Aleutians) as well as a line of volcanoes along the edge of the continent (the Aleutian Range on the Alaska Peninsula).