The Vast Majority of All Sedimentary Rocks Are Sandstones, Limestones

question 70

Multiple Choice

The vast majority of all sedimentary rocks are sandstones, limestones and ______.

• A) magmas
• B) detritus
• C) shales
• D) schists
• E) none of the above

---

Definitions:

Cytotoxic T Cells

Immune cells known for their capacity to kill cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.

Macrophages

A type of white blood cell that engulfs and digests cellular debris, foreign substances, microbes, and cancer cells in a process known as phagocytosis.

Cytokines

Small proteins released by cells that have a specific effect on the interactions and communications between cells, especially in immune responses.

T Helper Cells

A subtype of white blood cells that play a crucial role in the immune system by assisting other cells in immunological processes.