Lv 5
? asked in HealthOther - Health · 2 months ago

A quick question for time travel/future knowledge being shared with someone from around the 1800s or earlier :)?

How could a time traveler teach others to find/test for different blood types?

2 Answers

  • 2 months ago

    They can't. There is no such thing as time travel.

  • kelvin
    Lv 7
    2 months ago

    what do the two have to do with each other

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