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Science 7R

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substances that can prevent but not cure a disease????

I did the others with my dad.

is it vaccine?????

  • Science 7R -


  • Science 7R -


    Because i was thinking of that and ask if I was right.

    Thanks!!! :)
    PS: don't wrry about the other post i post about the other question my dad help me.

  • Science 7R -

    Great! I'm glad you and your dad are working together on this assignment. :-)

  • Science 7R -

    Yup! :)

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