Answer:
Oral poliovirus vaccine or Sabin vaccine, named for its inventor American physician and microbiologist Albert Sabin, was developed. OPV contains live attenuated (weakened) virus and is given orally.
Answer:
Any combination of D, E and F
Explanation:
Since A, B, and C belong to different orders, and D, E and F belong to the same order, the latter are more closely related and thus are expected to show a greater degree of structural homology. They are closer to their common ancestor than A, B and C.
Answer:
epidermis
Explanation:
The epidermis is the protective outer layer of clonally related cells covering all plant organs. and the outer most layer in animals is no
The digestive system, it breaks down the material into nutrients and the circulatory system then carries it out to the cells throughout the body. hope this helps!!!
