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.
Each porcupine usually restricts its feeding to 1-2 species, perhaps because of the role of its microflora. Hemlock cambium, phloem, and foliage are the preferred foods. White pine, red spruce, larch, sugar maple, yellow birch, and beech are some of the other key species.