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.
Geographic Range: The common porcupine is found in boreal North America from Alaska to Labrador and southward to northern Mexico. Erethizon is also found in the Lake States and New England. In the north-central region, it is found only in Michigan, Wisconsin, and Minnesota. Physical Characteristics: Mass: 3 to 7 kg.