why are pollen grains useful when studying the climate history of a region?\no they may contain the remains…

why are pollen grains useful when studying the climate history of a region?\no they may contain the remains of ancient organisms.\no they may have rings inside them that reflect variations in the local climate.\no they can be preserved within the fossils of organisms that carry them.\no they provide clues about the types of plants that grew in a region at a particular time.

why are pollen grains useful when studying the climate history of a region?\no they may contain the remains of ancient organisms.\no they may have rings inside them that reflect variations in the local climate.\no they can be preserved within the fossils of organisms that carry them.\no they provide clues about the types of plants that grew in a region at a particular time.

Answer

Answer:

D. They provide clues about the types of plants that grew in a region at a particular time.

Brief Explanations:

Pollen grains are specific to plant species. By identifying pollen, we can know past plant - life which is related to past climate as different plants thrive in different climates.