Phitomining (probably spelt wrong)
This process is called "electrowinning" of copper.
By using scrap iron, you are not using iron which can be used elsewhere, like in buildings. It also saves money on sourcing and extracting new iron.
one example is when you are unzipping a game on the p.c using the help of winrar[extracting program] Another example is when you take something out extracting it.
Smelt maybe?
You Defeat Zomboss by Using the given plants on the conveyor belt. Don't forget: he can summon, or get Zombies and CRUSH plants
You do not mention what you are using as the anode and cathode, but i would assume that given the green colour you are using copper or brass perhaps as the anode, and it is breaking down into a copper carbonate(which is green). By applying electrical current to the circuit you are speeding up the conversion of copper to copper carbonate(or similar).
migrant
its quite simple the plants take the metal in through there roots and then you burn them to release the metals.l
Microwaves can destroy polluting gases given off by power plants.
you get it from the ground either by using a ore or extracting it from the ground
breathing their lungs and extracting it from water using gills
This conventional procedure, centuries old in its main features, has serious disadvantages today due to four main reasons: (a) Air quality laws, limiting drastically the SO 2 emission to the atmosphere, (b) increasing energy cost, (c) decreasing quality of copper deposits, and (d) the requirement of building high capacity plants to meet competitive costs.