Which of the following accurately describes the use of tree rings for studying past climates (dendroclimatology)?
a. Tree rings can indicate periods of growth and contraction, which can be used to understand past climate variability.
b. Dendroclimatology uses the width, density, and isotopic composition of tree rings to reconstruct past climate conditions.
c. The study of tree rings can provide insights into temperature, precipitation, and drought patterns in specific regions.
d. Scientists can analyze tree rings to determine the frequency and severity of past weather events, such as hurricanes or droughts.