Why Does Much of a Desert's Surface Consist of Sand,gravel,and

question 2

Multiple Choice

Why does much of a desert's surface consist of sand,gravel,and rock rubble?

• A)because clay minerals form slowly in a desert environment
• B)because wind blows away clay and soil before it can accumulate to great thickness
• C)because vegetation is sparse and cannot prevent erosion of soil
• D)all of the above

---

Definitions:

Platelet count

A blood test measure to determine the number of platelets in a given volume of blood, important in assessing clotting capability and diagnosing various conditions.

Blood Specimen

A sample of blood taken for testing, analysis, or use in medical diagnosis.

Tourniquet

A device used to apply pressure to a limb or extremity in order to limit but not stop the flow of blood, commonly used in medical emergencies or surgeries.

Hematology

The branch of medicine involved with the study and treatment of blood diseases and the organs involved in forming blood.