Which Elements Account for More Than 97% of the Weight

question 35

Multiple Choice

Which elements account for more than 97% of the weight of most organisms?

• A) C, H, N, Mg, O, S
• B) C, H, N, O, P, S
• C) C, H, N
• D) Fe, C, H, O, P
• E) Ca²⁺, K⁺, Na⁺, Mg²⁺, Cl^-

---

Definitions:

Antebellum Era

The period in American history before the Civil War, noted for its economic, social, and political divisions between the North and the South.

Inaugural Address

A speech given during the inauguration ceremony of a newly elected or re-elected official, outlining their intentions, policies, and goals for their term in office.

George W. Bush

The 43rd President of the United States, serving from 2001 to 2009, known for leading the country through the September 11 attacks and initiating the Iraq War.

African-Americans

A racial or ethnic group in the United States with ancestry from the black racial groups of Africa.