The Following Questions Refer to the Paragraph Below

question 16

Multiple Choice

The following questions refer to the paragraph below.
A sediment core is removed from the floor of an inland sea. The sea has been in existence, off and on, throughout the entire time that terrestrial life has existed. Researchers wish to locate and study the terrestrial organisms fossilized in this core. The core is illustrated as a vertical column, with the top of the column representing the most recent strata and the bottom representing the time when land was first colonized by life.

Figure 25.2
-In order to assign absolute dates to fossils in this sediment core, it would be most helpful if

• A) we knew the order in which the fossils occurred in the core.
• B) the sediments had not been affected by underwater currents during their deposition.
• C) volcanic ash layers were regularly interspersed between the sedimentary strata.
• D) metamorphic rock strata alternated with sedimentary rock strata.
• E) fossils throughout the column had equal ratios of a parental radioisotope to its daughter isotope.

---

Definitions:

Maternity Leave Policies

Regulations and standards established by organizations or governments that allow mothers to take time off work in the period surrounding childbirth or adoption.

Papua New Guinea

An Oceanian country that occupies the eastern half of the island of New Guinea and its offshore islands in Melanesia, a region of the southwestern Pacific Ocean.

Suriname

A country located on the northeastern coast of South America, known for its diversity in cultures, languages, and ecological systems.

Informal Leaders

Individuals within a group or organization who, despite lacking official authority, influence and guide others through personal attributes and relationships.