Different Periods of the Geologic Time Scale Are Different in Length

question 68

Multiple Choice

Different periods of the geologic time scale are different in length. Why?

• A) The geologists who developed the time scale did not care about absolute ages.
• B) The time scale was developed ad hoc, as a relative time scale based on rocks and fossil succession with no reference to absolute time when it was developed.
• C) Early geologists made mistakes, but it was easier to retain the terminology in the time scale.
• D) None of the above.

---

Definitions:

Fats

They are a group of compounds that are insoluble in water and consist of triglycerides. Fats serve as energy storage molecules, insulation, and cell structure components.

Amino Acids

Compounds that function as the primary elements in the formation of proteins, each characterized by a specific arrangement of nitrogen, carbon, hydrogen, and oxygen.

Chemical Digested

The process of breaking down substances into simpler components through chemical reactions, usually referring to the digestion of food.

Brush Border Cells

Epithelial cells found in the intestinal lining and kidney, characterized by a densely packed layer of microvilli on their apical surface to enhance absorption.