What Mineral Particles Are the Dominant Colouring Agents in Reddish

question 28

Multiple Choice

What mineral particles are the dominant colouring agents in reddish, brownish, and yellowish soils?

• A)soluble potassium and sodium bicarbonates
• B)humus and calcium carbonate
• C)very fine-sized silica and calcite particles
• D)dust-sized grains of iron oxides

---

Definitions:

Conduction

The process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or electrical potential between adjoining regions, without movement of the material.

Allergic Response

The body's immune system reacting abnormally to a foreign substance, such as pollen, food, or medication, resulting in symptoms like itching, swelling, and difficulty breathing.

Antibiotic

Substances used to kill or inhibit the growth of bacteria, used primarily in the treatment and prevention of bacterial infections.

Febrile Seizures

Convulsions in young children caused by a spike in body temperature, often from an infection.