| 1. | The dated material consisted of a piece of exterior wood containing about 30 annual growth rings.
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| 2. | Cross section of the phalanx bones shows annual growth rings which may be used for determining age.
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| 3. | Annual growth rings indicate the animal's age.
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| 4. | Annual growth rings in herbs are usually only visible by means of a microscope and a specific staining method.
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| 5. | AWI defines quartersawn lumber as having annual growth ring orientation between 60-90 degrees relative to the face of the board.
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| 6. | The trunk consists of thousands of small fibers and lacks annual growth rings, making it difficult to determine the tree's age.
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| 7. | The newly created xylem is the annual growth rings There may also be rays running at right angles to growth rings.
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| 8. | Scientists have discovered that they can read annual growth rings in fossilized bones as accurately as the growth rings found in trees.
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| 9. | The ages of the animals came from counting annual growth rings in the bones, a common feature in fish, reptiles and dinosaurs.
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| 10. | "We'll probably pull the otoliths _ the ear bones _ to help us age them; they have annual growth rings like a tree.
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