Scatter synonym domino cards face up on a flat surface. 2. Taking turns, student one places the START domino on the table, and reads the word on the other end of the domino (i.e., small). 3. Looks for a domino with a synonym (i.e., little).
Reducing Mercury in Gold Shops with a Mercury Capture System Small-scale gold refining and processing is a major cause of air pollution from mercury. EPA helped design a low-cost mercury capture system that is simple to build and install, using locally available materials, and that reduces mercury emissions by at least 80%.
Other sources of mercury can be silver-colored dental fillings that contain up to 50% mercury by weight and can release mercury vapor, fluorescent light bulbs that use electricity to excite mercury vapor, and mercury fever thermometers made of glass.