Which of the Following Statements About the Banded Iron Formations

question 19

Multiple Choice

Which of the following statements about the banded iron formations is true?

• A)The BIFs show evidence of an oxygen-poor atmosphere because all of the oxygen was dissolved into the oceans and then precipitated as iron-oxide minerals.
• B)The BIFs show evidence of an acidic ocean that forced iron to bond with the oxygen in the water to form iron-oxide minerals.
• C)The BIFs show evidence of an oxygen-poor ocean because all the oxygen was trapped in the iron-oxide minerals that make up the formation.
• D)The BIFs show evidence of an oxygen-rich atmosphere that forced the oceans to become oxidizing and precipitate iron-oxide minerals.

---

Definitions:

Social Insurance Programs

Government-sponsored programs that provide financial protection to individuals against economic risks such as unemployment, illness, and old age.

Welfare

Welfare refers to government programs and policies designed to support the well-being of individuals and communities, including health care, education, and financial aid.

Public Charity

A type of nonprofit organization that receives a significant portion of its funding from the public and operates for the benefit of the general public.

Income Statistics

Data that represent the distribution of income across different segments of the population.