A team led by Drexel University professor Kenneth Lacovara is making
models of dinosaur bones one-tenth the bones' original sizes 5 in order
to learn how they fit together when the animals were alive. In the past,
such research was limited by the weight and bulk of the fossils as well as
6 its preciousness and fragility. In many cases, scientists had to
rearrange bones virtually, using artists' renderings. Z Because CT
scanners can map objects that are impossible to excavate, CT scanning
and 3-D printing can also be used to reproduce fossils that scientists
cannot observe firsthand. 8 By contrast, researchers from the National
Museum of Brazil has relied on this technique to study a fossilized
skeleton that was discovered protruding from a rock at an old São Paulo
railroad site.
5. What change needs to be made for #5?
O so that one is learning
Oso to learn
NO CHANGE
O in order for learning
25 points