I'm pretty sure it's deposition because the sediments in the water(soil) are building up on the rock.
It shows the evolution of an being. "Fossil record, history of life as documented by fossils, the remains or imprints of the organisms from earlier geological periods preserved in sedimentary rock." from https://www.britannica.com/science/fossil-record
They all have a true nucleus and complex cellular organelles and are large and eukaroyote
They are made of some of the same matter
Chloroplast and mitochondria. Because both organelles are roughly the same size and shape as bacteria, have their own double layer membrane, and mitochondria have dna, that they were engulfed by early cells and are now organelles.
