Trilobite means three lobes, since the trilobite has three lobes.Even thought they look like bugs, They actually are sea creatures! They also ate something we would classify as Completely Gross, Bacteria!
The trilobite is important to the stream ecosystem because people can find the fossils and learn about them, and they can also stop erosion due to ow big the rock they are fossilized to is.
The trilobite is both a solid when fossilized, and liquid and solid when still alive. They obviously had air in them when they got oxygen from water.
The trilobite interacts with a lot of other states of matter, including water, which can erode the trilobite, it could fall out of a high place, and break, wind can erode it, and it can be melted by other hot liquids.
The trilobite has a large range of 0.12 inch length, to a 12 inch length! Sometimes almost two feet long. Width varies greatly, at a 0.11 of an inch to 12 inches.
The chemical changes my organism goes through is, when still living, it digests food, and it goes through fossilization.
OMG it looks like a trilobite!!!
The physical changes my orginasm goes through are being thrown against a wall and broken while fossilized,
Water molecule model !!! These are what my orginasm would be close to!