Failure to follow any of the formatting instructions (ex: double-spaced) will result in a 5 point deduction for each error.“Discuss” is defined by Merriam-Webster as “to present in detail for examination or consideration.”  Please remember this in your answersEach question is worth 20 points.REMEMBER ANSWER ALL PARTS OF THE QUESTION.Define and discuss the three periods of human prenatal development (3 points), making sure to discuss them in proper order (3 points).  For each period, discuss 3 major characteristics of that period (9 points).  Finally, for each period of prenatal development, name a human teratogen and its out possible outcomes (3 points)  Discuss how each teratogen named effects are the same or different in different prenatal periods (2 points).Define and discuss the process of Epigenesis (5 points). What are the major characteristics? (5 points) Discuss the effect of environment over the lifespan in this process. (5 points) Discuss one example of epigenetic change. (5 points)Define and discuss the experimental method, as used in developmental science. (5 points) What are advantages and disadvantages of using the experimental method in developmental research? (5 points) Define and discuss cross-sectional, longitudinal, and sequential designs as they apply to the experimental method. (5 points) Give an example of a type of research question the experimental method canaddress. (2 points). How is this example best addressed, cross-sectionally, longitudinally, or sequentially (3 points).Define and discuss the nature/nurture debate (4 points). Give an example of a developmental change that is primarily “nature” driven. (2 points) Give an example of a developmental change that is primarily “nurture” driven. (2 points). Give an example of a developmental changes that is affected by BOTH “nature” and “nurture.” (2 points) Define and d iscuss  one modern theory that addresses relationship between nature and nurture. (10 points)