DENDROLOGY

Detailed explanation-1: -These rings can tell us how old the tree is, and what the weather was like during each year of the tree’s life.

Detailed explanation-2: -A tree ring is simply a layer of wood produced during one tree’s growing season. Each tree ring marks a line between the dark late wood that grew at the end of the previous year and the relatively pale early wood that grew at the start of this year.

Detailed explanation-3: -Because the tree rings are formed by the change in growth speed throughout the year, we can see environmental changes by seeing how well the tree grew. Comparing trees of the same species growing nearby, scientists can determine many things about the environment at the time and the timing of some kinds of events.