Answer:
Gastrulation.
Explanation:
The embryonic development occurs through the different developmental stages like cleavage, morula, blastula and so on. The formation of the germ layers occur in the gastrulation period.
The primitive streak is the structure that develops during the early stages of the gastrulation. As the embryo becomes asymmetric., the cells moves from their initial position and leads to the formation of primitive streak in the gastrulation phase.
Thus, the correct answer is option (C).
Answer:
not smoking and getting some form of daily physical activity
Answer:
Individuals who don't know that they are infected can continue to transmit STDs. Some people who suspect they have an STD may be too embarrassed to seek treatment. to health departments so that contacts can be notified and treated. These contacts can continue to unknowingly transmit the disease to others.
