The Process by Which Heavier Materials Sank into the Centers

question 177

Multiple Choice

The process by which heavier materials sank into the centers of terrestrial planets while lighter material rose to the surfaces early in the history of these planets is known as

• A) hot-spot volcanism.
• B) planetary differentiation.
• C) seafloor spreading.
• D) subduction.

---

Definitions:

Cell Division

The process by which a parent cell divides into two or more daughter cells, crucial for growth and repair.

Spermatozoa

the male reproductive cells or sperm cells that carry a man's DNA.

Semen

The male reproductive fluid containing spermatozoa, used for reproduction.

Chlamydia

A common sexually transmitted infection caused by the bacterium Chlamydia trachomatis, which can cause serious reproductive and other health problems with long-term consequences.