# data[].attributes.headline
From what you learned in the first 3 Science 10 modules, arrange the items on the graph according to their temporal (when they first appeared) and spatial (relative size) scales.  The Big Bang is at the origin.

# data[].attributes.subject
From what you learned in the first 3 Science 10 modules, arrange the items on the graph according to their temporal (when they first appeared) and spatial (relative size) scales.  The Big Bang is at the origin.