A good way to answer this would be to think about what the major sinks of each resource are. For example phosphorus is mainly pooled in rocks and is released when rocks are weathered and then cycles with the death and decay of plants (etc.) that take it up.
It doesn't occur like this for the nitrogen and carbon cycles - what are their major sinks?
I've attached a pdf which outlines the cycles pretty well :)
That depends. What kind of change are you talking about? But
Mass<span> through chemical </span>change<span> stays the same as well. Example: burning paper, the ash left behind is not all of the </span>mass<span> of the reactants, Carbon dioxide, and other </span>substances<span> also makeup</span>mass<span> but just is not seen
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Answer:
Iron, copper , calcium
Explanation:
Iron , copper and calcium are present in three different groups.
Iron is present in group eight.
Copper is present in group eleven.
Calcium is present in group two.
Sodium , potassium and rubidium are present in same group i.e. group one. These are alkali metals.
Fluorine, chlorine and bromine are present in group seventeen. These are halogens.
Argon, Krypton and xenon are present in same group i.e, group eighteen. All are these noble gases.
