Answer:
perimysium
Explanation.
Perimysium is the name given to the fibrous sheath that surrounds (covers) each bundle of single muscle fibres, the bundle being known as a fascicle.
It is between A and B.
But if the species is going to be extinct, that means that they are being threatened.
So the answer is B.
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution.
Answer:
Prior exposure to smallpox.
Explanation:
The small pox is the infectious disease caused by the different strains of variola virus. The vaccination for the small pox is available to eradicate the disease.
The milkmaids are already and multiple times have the exposure with the small pox. This develops the memory of the small pox virus infection in the immune cells of the individual and they are less likely on the infection exposure with the small pox.
Thus, the answer is prior exposure to smallpox.
