OBJECTIVE FORESTRY

Detailed explanation-1: -Because trees are sensitive to local climate conditions, such as rain and temperature, they give scientists some information about that area’s local climate in the past. For example, tree rings usually grow wider in warm, wet years and they are thinner in years when it is cold and dry.

Detailed explanation-2: -A tree ring, representing one year, consists of two layers: A light colored layer which forms in the spring and early summer, which is typically thicker because the tree is growing. A dark colored layer which forms in late summer and fall, which is typically thinner because the trees growth slows.