Prehistoric ecology is the study of ancient environments and how early organisms interacted within these environments. By exam
(ining) fossilized pla
(nts), animals, a
(nd) other orga
(nisms), scientists c
(an) reconstruct pa
(st) climate condi
(tions) and le
(arn) how ecosystems ha
(ve) changed ov
(er) time. For example, the presence of fossilized pollen from species that thrive in warm climates indicates a warm climate. Therefore, the types and abundance of pollen in different sediment layers provide evidence about the climates of specific periods.
