Astudent designs an electromagnet, as shown in the picture. the electromagnet is only able to pick up 1 paper clip. list 2 modifications he could make to his electromagnet in order to enable it to pick up more paper clips.

The answer is;  

The nail becomes magnetic through a phenomenon called ferromagnetism. The electric field around the coils, as the current passes, cause an alignment of electrons on the nail and cause it to have magnetic properties. Iron, nickel, and cobalt are highly ferromagnetic materials.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.