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.
In the spring and summer porcupines eat buds, flowers, leaves and small twigs. Porcupines do not. hibernate in the winter. In winter the inner bark, or cambium, of trees forms the main part of their diet. They chew through the. outer bark of trees to get to the edible cambium.