Answer:
antibodies to a disease bacterium
Explanation:
Answer:
This is true.
Explanation:
More commonly, an X chromosome will die and get replaced by a Y chromosome (all humans start off as females). When this occurs, the substitute Y chromosome causes changes in the zygote to occur; they begin developing male genitalia (i.e. penises, testicles, prostates, etc.).
Answer:
Therefore, when an experiment shows that one variable makes another variable change, and no other variables have any effect, the experiment shows causation.
Because the vaccinations are producted in HK or Shanghai...
