Question

What is Limestone (CaCO3 Calcium Carbonate)?

A: Cryptocrystalline quartz on the ocean floor

B: An ocean lava that creates islands

C: An ocean sedimentary rock formed from the shells of dead organisms

D: A clastic sedimentary rock deposited into the ocean from rivers

Answer 1

C

Step-by-step explanation:

Limestone, otherwise known as Calcium Carbonate, is an ocean sedimentary rock formed from the shells of dead organisms.

When these animals die, their shell and skeletal debris accumulate as a sediment that might be lithified into limestone. Limestones formed from this type of sediment are biological sedimentary rocks.

Answer 2

C: An ocean sedimentary rock formed from the dhells of dead organisms