How Are Past Volcanic Eruptions Most Commonly Recorded in the Geologic

question 19

Multiple Choice

How are past volcanic eruptions most commonly recorded in the geologic record?

• A) by changes in rock cracks
• B) by fossils of organisms that died during the eruptions
• C) by deposits of ash and lava
• D) by changes in the water table

---

Definitions:

Normal Aging

The natural process of bodily changes that occur as people grow older, not necessarily including disease or disability.

Older Adults

Individuals typically defined as being in the late adult stage of life, often considered to be ages 65 and older.

Theories

Systematic ideational structures that are intended to explain phenomena.

Speech and Language Difficulties

Impairments related to producing and understanding speech or language, affecting communication capabilities.