In 1968 the average salary of men teachers in maintained schools in England and Wales was Â£1,646. I estimate that the last two pay settlements have raised this figure to about Â£1,880. The comparable figure at 31st March, 1963, was Â£1,244.
Two main tectonic structures are spreading centers and subduction zones. Spreading centers occur at the boundary between two plates that are moving apart, called divergent plate boundaries. Here the plate motion opens a gap between the plates and magma from the mantle rises up through it.
alpine zone A region that occurs above the tree-line and below the snow-line on temperate and tropical mountains.The vegetation is characterized by an absence of trees, and varies greatly with aspect, the greatest contrasts being between the wet side and the dry, leeward side of the mountains concerned.lpine zone A region that occurs above the tree-line and below the snow-line on temperate and tropical mountains.