An International Standard Used as a Carbon Isotope Standard Is

question 18

Multiple Choice

An international standard used as a carbon isotope standard is

• A) Troilite.
• B) V- SMOW.
• C) atmospheric air.
• D) PeeDee belmnite.

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Definitions:

Cortex

The outer layer of an organ or structure, such as the cerebral cortex of the brain or the cortex of the kidney.

Epidermis

The outer layer of cells covering an organism, particularly the surface layer of skin.

Root Hairs

Thin, hair-like extensions from a root's surface that increase the surface area for water and nutrient absorption from the soil.

Eudicot

A major group of flowering plants that are characterized by having two seed leaves, or cotyledons, and a range of other structural features.