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.
Definition Plant Hardiness Zones: are a guide to help you know which plants thrive in areas of certain temperatures. The zones are divided into sections by the coldest annual temperatures. Each plant has a hardiness zone. You can find this information on seed packets, In online databases and in garden books.