Please help me to fill in the blanks. Thanks! Sediments minerals rock remains sedimentary millions

When animals and plants die, their bodies fall into . Some of these decays while some become part of rocks. Rock layers build up and the rock becomes a solid. The in the rock replace the in parts of dead bodies. This takes place over of years. The of living organisms that have changed to are fossils.

When animals and plants die, their bodies fall into sediments. Some of these decays while some become part of fossilized rocks. Rock layers build up and the rock becomes a solid. The minerals in the rock replace the soft parts in parts of dead bodies. This takes place over millions of years. The remains of living organisms that have changed to stone are fossils.

the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed