The image shows an example of a sedimentary rock. Large and small shells embedded in light colored rock.

Which feature of this rock demonstrates that it is an organic rock?

the varying sizes of its rock fragments
the visible pieces of sediment it contains
the ocean animals deposited in its layers
the crystals of dissolved minerals it contains

Drag each characteristic or feature to the correct location on the diagram sort the features and characteristics by the groups they are found in. a.spinal cord b.metamorphosis c.scales d.lungs in adults e.ectothermic f.external fertilization g.gills in adults h.amniotic eggs 1.fish 2.fish and amphibians 3.amphibians 4.fish and reptiles 5.fish, reptiles and amphibians 6.amphibians and reptiles 7.reptiles