A tree with closely spaced annual growth rings
makes dense framing lumber, especially if cut after growing for two or three centuries.
Their article gives the strong impression that research involving the use of annual growth rings
in olive trees is inherently hopeless.
No obvious annual growth rings
were observed on the surface of Atrina vexillum shells.
The annual growth rings
in trees are the most important witnesses over the past 1,000 to 2,000 years as they indicate how warm and cool past climate conditions were.
Dendrochronology is a precise science of using annual growth rings
of trees to understand climate in the past.
Similar to annual growth rings
of trees, otoliths' rings can be counted to indicate a fish's age and annual growth rate, estimated by measuring distances between each new ring.
In regions with well-defined seasonal growth, the annual growth rings
of trees provide both chronological control and a continuous time series of proxy environmental variables.
Many fish scales, particularly those of species that live in cooler, temperate waters, show annual growth rings
, and counting these rings can give the age of the fish.
Sereno and associates then opened an expansive quarry, excavating more than 25 individuals ranging in age from 1 to 7 years, as determined by the annual growth rings
in their bones.
They based their conclusion on a study of corals, which like tree trunks have annual growth rings
that record environmental change.
Grain refers to annual growth rings
in the wood, and is classified as fine (cherry) or coarse (red oak).
Many dinosaur bones show annual growth rings
, as trees do, says Gregory M.