looking for help on human development discussion post

Address the questions associated with two of the following four issues in your response:

What are critical periods in the development process of an embryo and fetus? When do they occur and how might they be disrupted?
Which aspects of diet and exercise do you think are most critical during pregnancy?
What are the effects of alcohol, cigarette smoke, or e-cig vapors on a developing fetus?
What are the risks and benefits of Catarina remaining on antidepressants during her pregnancy, both for Catarina and for her baby?

Remember, you only need to select two of the issues to address in your discussion posting.