Answer:
15.) What happens to hormone levels if a woman becomes pregnant?
A.) Estrogen and progesterone are the chief pregnancy hormones.
16.) Why does menstruation begin?
A.) Period happens because of changes in hormones in the body.
<u>-TheUnknownScientist</u>
Answer:
Option (B).
Explanation:
Immunization is used by which the individual immune system are fortified against the particular pathogen. Immunization protects the organism from the specific disease.
Two species of monkey A and B, the species A has been immunized while B is not. The birds are eliminated by hunters and lack of immunization in species B causes the increased mortality rate of the monkey of species B.
Thus, the correct answer is option (B).
I would say either the youngest layer of rock, or the oldest layer of rock
Answer:
Hunting
Explanation:
You may see a mountain lion hunting an elk in their ecosystem, which is apart of the circle of life.