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Lucy's Ribs

ACTSCI-BPKLWF

Why are the ribs important evidence for determining Lucy’s origin?

Is Lucy a Human or an Ape

A

A rounded rib shape means the fossil is of human origin.

B

The shape of the rib allows you to tell the species of the fossil.

C

A flat rib shape means that the fossil is of ape origin.

D

A “stiff” rib shape means the fossil is of human origin.