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Whitepunk [10]
3 years ago
15

Which of the following technological developments first allowed humans to successfully travel to outer space and back

Biology
2 answers:
oee [108]3 years ago
5 0

Answer:

No options were given however, to my knowledge, the first was the hot air balloon.

Maru [420]3 years ago
3 0

Answer:

what are the options

Explanation:

i need help on it too

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