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Card 6
Front
...because it is hard to manage..... on earth
Back
Card 7
Front
research into all this has become very....
Back
Card 8
Front
so far to....these conditions on earth have been unsuccessful
Back
Card 9
Front
what is still not accepted as realistic because results are impossible to verify so far?
Back
Card 10
Front
Scientists are still trying to solve the .... challenges
Back
Card 11
Front
SCIENTISTS ARE ALSO TRYING TO SOLVE ITS P....... CHALLENGES TOO
Back
See full card set