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The sea of free, delocalised electrons move through the metal, therefore conducting electricity.

The number of white blood cells increase. This is because the white blood cells are responsible for engulfing pathogens and producing antibodies to defend against disease.

The plasmid is inserted into the vector. The vector infects the plant and the plasmid is incorporated into the plant DNA. The infected cells can then be isolated as they contain the new gene from the plasmid.

Add silver nitrate solution to the solution containing halide ions. Chloride ions will form a white precipitate (silver chloride). Bromide ions will form a cream precipitate (silver bromide). Iodide ions wil...

We have one linear and one quadratic equation here. Since we have a quadratic, we will have two sets of solutions. Let's solve by substitution. Substitute equation (1) into equation (2), which yields:x + 19 ...