On October 8, 1871, a fire broke out in a barn on the southwest side of Chicago, Illinois. For more than 24 hours, the fire burned through the heart of Chicago, killing 300 people and leaving one-third of the city's population homeless. The "Great Rebuilding" was the effort to construct a new, urban center.
During photosynthesis, the energy from sunlight is used to split water molecules. The thing that happens to the hydrogen ions that are split from the water molecules is that A. they build up in the thylakoid.
