2. A fair six-sided die is thrown 6,000 times.
Find how many times the die would be
expected to land showing:
(a) The number 1
(b) An even number

Answeri read somewhere it was the umbilical cord; or placenta; plz check first; good luck

Immunization is the introduction of a foreign substance to provoke  the immune response system.  immunizations are the same as vaccinations. it introduces foreign (but dead/ weakened) illnesses to train the body to fight against them. specific viruses and bacteria have specific antigens, antigens act sort of like name tags. these name tags the immune system recognize what's dangerous to the body and what's safe. 

I'm pretty sure it's worms.

The answer is replication