Prime Time Upper 4f - Back to life

become

• extinct
• scientist
• site

roam the

• material
• Earth
• an expedition

last

• extinct
• by an idea
• long

world famous

• long
• scientist
• breakthrough

make a

• breakthrough
• research
• long

remote

• material
• to do something
• site

run tests

• on
• of
• at

organic

• site
• frozen
• material

distant

• scientist
• relative
• long

line of

• research
• type
• extinct