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Coastal Erosion Coastal erosion is the wearing away of land and the removal of beach	Volcanoes An opening in the Earth's crust that is connected to a magma chamber via a vent	Tree Frogs Tree frogs use sticky pads on their feet to climb trees.
British Cinema This interactive guide explains what you need to use film in the classroom	Algebra Algebra involves equations in which symbols represent unknown numbers.	Chemistry Chemistry text