Question

What do scientists study to reconstruct past climate conditions?

tree branches, pollen grains, and rain water
pollen grains, tree rings, and fossils
rain water, tree rings, and fossils
fossils, pollen grains, and tree branches

Answer 1

Scientists study **pollen grains, tree rings, and fossils** to reconstruct past climate conditions. Pollen grains can provide information about past vegetation and climate, tree rings (dendrochronology) can indicate climate variations over time depending on growth conditions, and fossils can give insights into the types of organisms that existed at different periods, reflecting the climate of those times.