Cabbage, broccoli, and cauliflower are in the same plant family, so they will use similar nutrients, depleting the soil faster of those nutrients (they are heavy feeders). Also, they will attract the same pests and diseases, so keep an eye out. We've revised the text in the article so that it is clearer.
Introduction. Magnets have north poles and south poles. These attract each other. But two north poles will repel each other, as will two south poles. Iron is magnetic, so any metal with iron in it will be attracted to a magnet. Most other metals, like aluminium, copper or gold, are not magnetic.
However most people donât really understand what are magnets made of and how they even work. The issue is that we just know that magnets attract iron and nickel. However, magnets have a very interesting origin and can be seen as a physical manifestation of the electromagnetic force. All magnets are made of a group of metals called the ferromagnetic metals. These are metals such as nickel and iron. Each of these metals have the special property of being able to be magnetized uniformly. When we ask how a magnet works we are simply asking how the object we call a magnet exerts itâs magnetic field.