“Foraminifera produces what material?”

"Foraminifera microscopic marine organisms produce chalk through their calcium carbonate shells. Accumulating on ocean floors over millions of years these shells form chalk deposits like those in Dover cliffs. Foraminifera play a vital role in marine ecosystems and geological processes. Their fossils aid in studying Earth’s climate history. Understanding foraminifera’s role in chalk production highlights their significance in geology and environmental science reflecting connections between marine life and Earth’s structure."