A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound. The starting materials are always pure elements, such as a pure zinc metal or hydrogen gas, plus an aqueous compound.
Answer:
Magnets can be used in space. ... One class of magnets, called electromagnets, does need electricity to work.
Explanation:
Possibly wet and unstable
Benefits; helps our red blood cells transport oxygen all around our body
