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The Ratio of C₃ to C₄ Plants in a Paleoenvironment

question 31

Multiple Choice

The ratio of C₃ to C₄ plants in a paleoenvironment can be estimated using the ratio of two stable isotopes of which element derived from fossils or ancient soils?


Definitions:

Medications

Substances used to diagnose, treat, or prevent illness and disease.

Lorazepam

A medication belonging to the benzodiazepine class that is used to treat anxiety, insomnia, and certain seizure disorders.

Intramuscularly

A method of administering medication by injection directly into a muscle.

Subcutaneous Tissue

An underlying layer of tissue beneath the skin, consisting of fat and connective tissues that store energy and provide insulation.

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