What are units of completed training hours that translate into college course credits?

What happens to the composition of an atom to cause it to become positively or negatively charged?

Explain how earth is like a giant bar magnet. how is our magnetic field made?

Winds are formed from the sun's uneven heating of the earth's atmosphere. the wind patterns are altered by bodies of water, different landforms, and plant cover. because of this, the wind is considered a form of