If a Rock Sample Contains Uranium and Lead, but No

question 48

Multiple Choice

If a rock sample contains uranium and lead, but no lead-204 is present, then

• A) all the lead is radiogenic.
• B) all the lead is primordial.
• C) both radiogenic and primordial lead are present.
• D) neither radiologic nor primordial lead is present.

---

Definitions:

Hemorrhoids

Swollen veins in the lower rectum and anus, often causing discomfort, pain, and bleeding.

Distended Veins

Veins that are enlarged and swollen, often indicative of an underlying medical condition.

Rectum

The final section of the large intestine, concluding the digestive tract, where feces are stored before elimination.

Anus

The opening at the end of the digestive tract through which waste material is expelled from the body.