<span>The name of the
pathogenic worm that lives in the muscles of some of the animals, such as the
pigs is a type of pathogenic worm that is classified as a parasitic round worm that
is called Trichinella or Trichina. </span>
One fourth means (one half) of (one half) .
So the 18 months must be two half-lifes.
The half-life of this particular isotope is 9 months.
Answer:
Protozoology should be the answer.
1. metacarpals
2. carpals
3. phalanges
