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Summary:

A chart of 10 different Cosmological Models is given. It contains information about the density, the curvature and their cosmological constant.
Need to put 1 or 2 "x" in the last 4 columns. One for t→0 and one for t→∞
Main Question or Discussion Point
ρ_{ο}/a^{4}  ρ_{ο}/a^{3}  k  Λ  Βig Bang  Big Crunch  Polynomial Expansion  Exponential Expansion 
x  0  
x  0  >0  
x  +1  
x  +1  
x  0  <0  
x  1  
x  1  >0  
x  0  
x  +1  >0  
x  0  <0 