Explain how an electromagnet is made and how it can be made stronger?

In your own words

You can make an electromagnet stronger by doing things like wrapping the coil around a piece of iron adding more turns to the coil, increasing the current flowing through the coil.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

the answer is a) cell division.

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