Nan is pregnant with her first child. she just found out that the baby has grown one pound since her last doctor's appointment. she is in the period of prenatal development.

Which of the following statements are true chromosomes make up genes

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

How can an organ, such as the lungs, work for multiple body systems?