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_____ is used for writing, drawing and printing on.
Paper weighing more than 170gsm is _____.
______ is wood prepared for use in building.
____________ boards are large man-made sheets of recycled wood.
Manufactured ______ are large man-made sheets of recycled wood.
___________ metals do not contain a significant amount of iron.
Ferrous ______ are refined into bars, sheets, and other forms.
________ are constructed from a large number monomers bonded together.
______ are threads from which textiles can be formed.
_____ materials react to changes in their environment.
Smart _________ react to changes in their environment.
_________ materials are made up of two or more different materials.
___ technologies offer improvements over established technologies.
New ____________ offer improvements over established ____________.
________ is natural timber from deciduous trees.
________ is natural timber from coniferous trees.
