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Select the Letter of the Sentence That Is Correctly Punctuated

question 30

Multiple Choice

Select the letter of the sentence that is correctly punctuated with commas. Which sentence is correctly punctuated?


Definitions:

Short-lived Isotopes

Radioactive isotopes that decay rapidly, often used in medical imaging and studies of geological and planetary processes.

Long-lived Isotopes

Isotopes that have a long half-life, persisting in the environment for extended periods, often used in dating or tracing studies.

Emergence of Land Plants

The period in Earth's history when plants first developed and colonized land, around 500 million years ago during the Ordovician period.

Wattieza

An extinct genus of trees from the Middle Devonian period, recognized as one of the earliest known trees and an important part of Earth's prehistoric forests.

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