A 33-year-old G0P0 female presents to your clinic for her first prenatal visit. Her home pregnancy test was positive, she has been experiencing mild nausea for two weeks. Her last normal menstrual period was six weeks ago. What test should her initial prenatal visit include?

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they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.