The skeletal remains of plankton make up the sedimentary rock ________.
A)flint
B)breccia
C)travertine
D)chalk

Question

Quizplus · Accepted Answer

The skeletal remains of plankton, particularly coccoliths, are the primary component of chalk. Chalk is a soft, porous sedimentary rock that forms from the accumulation of these microscopic organisms over millions of years. Flint is a hard, sedimentary rock formed from the deposition of silica-rich material, while breccia is a type of sedimentary rock that forms from the accumulation of coarse, angular rock fragments. Travertine is a type of sedimentary rock that forms from the precipitation of calcium carbonate from mineral-rich water.

The Skeletal Remains of Plankton Make Up the Sedimentary Rock