What Is a Spontaneous Abortion

question 34

Multiple Choice

What is a spontaneous abortion?

• A)Involves the termination of the fetus through medical means.
• B)Occurs from natural causes before the conceptus is viable.
• C)Always occur during the third trimester of pregnancy.
• D)Is a result of psychological trauma in a pregnant woman.

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Definitions:

Isotopes of Oxygen

Variants of oxygen atoms with the same number of protons but different numbers of neutrons, leading to different atomic masses.

Ancient Earth

Refers to the geological and biological conditions of Earth in its early history, millions to billions of years ago.

Ancient Water

Refers to water that has been trapped in geological formations for thousands or even millions of years, often undisturbed by modern pollution.

Arctic and Antarctic Ice

Frozen water in the polar regions of the Earth, including sea ice, ice sheets, and glaciers, playing crucial roles in global climate regulation.