Answer:
controlled variables=paper clips
independent variables=different temp of water
dependant pieces of paper towel
Explanation:
Have a nice day
FIBRE B
is the answer
becausee
it is
1. Melting and boiling point increase as the atomic number increases.
<span>The answer would be: new combinations of the HA and/or NA proteins on the surface of the virus during viral evolution
</span><span>Antigenic shift is a mutation in the antigen that causes its shape changed. This change is dangerous because the white blood cells will not recognize them as the old virus, make the strong immune response delayed. This changes mostly caused by a random mutation.</span>
Matthias Schleiden, Theodor Schwann, Rudolf Virchow, Robert Remak, and Albert Kolliker.