Which planktonic marine organism, often found in sea sediments, can be used to make interpretations about past climates?

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Foraminifera are single-celled marine organisms that have been abundant in the world's oceans for millions of years. Their fossils are commonly found in marine sediment cores, and their specific species can provide information on past temperatures, salinity, and other environmental conditions. Clams, fish, and algae may also be present in sediment cores, but they typically do not provide as much detail about past climates as foraminifera.

Which Planktonic Marine Organism, Often Found in Sea Sediments, Can