The Tilted Beds That Are Often Visible in Fossil Dunes

question 21

Multiple Choice

The tilted beds that are often visible in fossil dunes are ____.

• A) formed by abrasion on the surface of the rock
• B) formed by tectonic tilting
• C) the original layers of the dune's windward face
• D) the original layers of the dune's slip face

---

Definitions:

Prediction Error

The difference between observed values and the values predicted by a model, used as a metric to evaluate the accuracy of predictions.

Absolute Value

The non-negative value of a number disregarding its sign; representing its distance from zero on the number line.

Criterion Variable

The dependent variable that is predicted or explained by independent variables in a study.

Dependent Variable

The variable in an experiment that is expected to change as a result of manipulations made to the independent variable.