Please help me with this question it is difficult for me!! Explain, with examples, the impact of the continual re-use of materials in nature. NB: the role of decomposers in the Carbon cycle, Nitrogen cycle- nutrient cycling and the Water cycle.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.