Stromatolites Are Layered Structures Produced by the Activity of

question 6

Multiple Choice

Stromatolites are layered structures produced by the activity of

• A) dinosaurs.
• B) methanogens.
• C) cyanobacteria.
• D) green algae.

---

Definitions:

Urinary Retention

The inability to completely empty the bladder during urination, which can lead to discomfort and potentially serious health complications.

Catheterization

A medical procedure involving the insertion of a thin, flexible tube into a body cavity, duct, or vessel.

Specific Gravity

The ratio of the density of a substance to the density of a reference substance; typically, for liquids, water is used as the reference.

Polycystic Kidney Disease

A genetic disorder characterized by the growth of numerous cysts in the kidneys, which can lead to impaired kidney function and kidney failure.