Wrapping the copper wire around an iron nail, increasing the current.   Increase the power going through the wire or have more wire wrapped around the metal object. So in â¦ the case of a nail with wire wrapped around it, the more wraps you do the stronger the electromagnet will be.
Porcupines are a type of rodent found in two main regions of the world, so scientists group them into either Old World or New World porcupines.
It is sometimes seen during the day, and it is the only New World porcupine that is terrestrial as well as arboreal. It will roost in trees but also dens in hollow trees, logs, or stumps, in addition to caves, rock crevices, burrows, or snowbanks. Individuals living in coniferous forests spend much time on the ground.