Answer:What causes the Northern Lights? activity on the surface of the Sun.
Can you predict when and where there will be Northern Lights? Yes but with less certainty then whether predictions.
Explanation
Yes, slaves wanted to return to Africa because Africa didn't have slavery.
Answer:
If lava cools slowly and does not move too fast it forms smooth ropy lava called pahoehoe.
However, if it cools quickly and moves fast it can tear into clinkery pieces called a'a
I got the Chinese as my answer. I had to look it up to find an answer. I hope it helps