A tree of known age is cut down, and its growth rings are examined. The tree is relatively young, and the year of its germination is known. There are more growth rings than the age of the tree in years. How can you account for the excess growth rings?
A) The tree was growing in a tropical area.
B) Some years had an above-average rainfall throughout the season.
C) Trees normally make several growth rings in each of their 10th through 15th years.
D) Drought in the middle of some summers resulted in two growth rings in each of those years.

Question

Quizplus · Accepted Answer

Drought conditions can cause a tree to temporarily stop growing mid-season, and then resume growth when conditions improve, leading to the formation of an additional growth ring within the same year.

A Tree of Known Age Is Cut Down, and Its