The layers of the atmosphere differ in temperature and density.
Answer: Ponyboy collapses at the lot, as his brothers and gang rush to help him. The next thing Pony remembers is waking up at home. He doesn't remember being in the hospital or being unconscious for three days, but he does remember that both Johnny and Dally are dead.
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he discovered that the sword Hrunting is useless against Grendel's Mothere's hard skin.
restating something leads to somethings ability to impact a reader.