Annual growth rings are commonly studied in trees.
be thinner
Woody Stem
Annual rings in woody stems are caused by an increase in rings of the secondary xylem. Secondary xylem tissue is produced by vascular cambium. It is also caused by increased and decreased activity of cork cambium during spring and winter, respectively.
be narrow and dark
by things growing annually in a circular fashion
Annual growth rings are commonly studied in trees.
annual rings
The annual rings provide the age of the tree, one annual ring equals one year of growth.
be thinner
the annual growth rings
By the annual rings
tyler groth \
counting the annual rings
Woody Stem
Annual rings in woody stems are caused by an increase in rings of the secondary xylem. Secondary xylem tissue is produced by vascular cambium. It is also caused by increased and decreased activity of cork cambium during spring and winter, respectively.
Annual rings