Plz help! I will mark Brianliest! What is the role that vaccines have played in historical pandemics and epidemics?

The "Savior" role

Explanation:

As u can see in past pandemics and epidemics vaccines were made to kill and eliminate pandemics and epidemics and or give ppl that take the vaccine  immunity to catching the pandemic or epidemic.Vaccines have honestly saved a lot of lives since 1796

hello there,

igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava

answer; i believe that the correct answer is(d) nondisjunction during meiosis;