The answer is b. Different plant species live in different climates.
Step-by-step explanation:
Pollen species can be used to interpret ancient environments because different plant species are adapted to grow in different climates and environments. By analyzing the types and quantities of pollen found in sediment or soil samples, scientists can determine what plant species were present in the past and make inferences about the climate and environment during that time. For example, if the samples contain a high proportion of pollen from trees that typically grow in warm, moist climates, it suggests that the environment was once like that. Alternatively, if the samples contain more pollen from grasses or shrubs that are adapted to dry conditions, it suggests that the environment was once drier or more arid. By studying the distribution of different pollen species, scientists can reconstruct past climates and ecosystems seen in pollen records from sediments accumulated in aquatic basins in different regions of the world.
Therefore, the correct answer is b. Different plant species live in different climates.