Which of the Following Statements Is/are CORRECT

question 42

Multiple Choice

Which of the following statements is/are CORRECT?
1) Naturally occurring isotopes account for only a small fraction of known radioactive isotopes.
2) A few radioactive isotopes with long half-lives,such as U-235 and U-238,are found in nature.
3) Trace quantities of some short-lived radioactive isotopes,such as C-14,are found in nature because they are formed continuously by nuclear reactions.

• A) 1 only
• B) 2 only
• C) 3 only
• D) 1 and 2
• E) 1,2,and 3

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Definitions:

Sovereign Nation

A political entity that possesses autonomy and independence, recognized by other states as having control over its territory and government.

Bunker Hill

A key early battle in the American Revolutionary War notable for the phrase "Don't fire until you see the whites of their eyes," demonstrating colonial forces could stand up to British regulars.

Articles of Confederation

The first constitution of the United States, ratified in 1781, which established a loose confederation of states with a weak central government, later replaced by the U.S. Constitution in 1789 due to its inefficiencies.

Military Tactics

The art and science of organizing and employing armed forces and their components during combat or engagements to defeat an adversary.