Bronfenbrenner's final level is the macrosystem, which is the largest and most remote set of people and things to a child but which still has a great influence over the child.
Term EMF is acronym for Electro-Motive-Force , that is a Force that Moves Electric Charge. It is not implied by the name of that term whether the origin of the Force is elecrostatic, magnetic , thermoelectric , or electrochemical.
Q1. Medium Density Fibreboard (MDF) is an engineered wood-based sheet material made by bonding together wood fibres with a synthetic resin adhesive. MDF is extremely versatile and can be machined and finished to a high standard. First, try to reduce risks at source where possible by using a lower risk alternative, where one exists. 2  An example of this could be to use a âno added formaldehydeâ MDF board or low-emission MDF board if practicable to do so. 3  There should be an effective dust extraction system in use whenever MDF is machined or sanded.