Answer:
They are unicellular and the members of the animal kingdom are all multicellular.
Hope this helps! Brainliest Please! ;p
They are able to travel in a vacuum at the same speed.
Hope it helps
B. is the correct answer. It makes sense too because vaccines are usually inserted in a vein, which is where the bloodstream is. With all of this medicine in your body, the virus will come into the body, the body will recognize what the virus is, sending out the antibodies from the vaccine into the bloodstream and all around, then the virus is dead. :)
Um...they become contaminated too, it's just a matter of determining the amount of contamination in the water in ppm & rate of absorption in the organism.