A Sediment Core Is Removed from the Floor of an Inland

question 32

Multiple Choice

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 fossilised 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 colonised by life.
If arrows indicate locations in the column where fossils of a particular type (see key) first appear, then which core in the figure above has the most accurate arrangement of fossils?

• A) core A
• B) core B
• C) core C
• D) core D

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Definitions:

Medium

A means or channel through which something is communicated or expressed.

Channel

A medium through which information, communication, or goods are transferred from one point to another.

Assertive Statement

A clear, confident, and direct way of expressing one’s thoughts, feelings, and needs without being aggressive or passive.

Perspective/Perception

The way an individual views or interprets something, which can be influenced by their beliefs, culture, or personal experiences.