ignious
it is if it is fossilised
nothing.
sedimentary rock
FOSSILS.
Coal is the remnants of plant matter buried ages ago, so it can be called the fossilised compost
A stratum is a layer of rock and/or soil found in nature. Rock strata that contain fish and other sea life found on top of mountains and other high elevations suggest that at some point in earth's history those areas were covered by water as well.
Sediments which are derived from some schist rock formations might contain garnet.
It can. Some of the abrasive material might come from finely powdered rock, as can the flourine.
Because sedimentary rocks are mainly located at sea, and this is where basically all fossilised creatures lived before death
A rock will always contain at least one mineral.
Fish off Gull Island in Spring or Winter and you might catch one.
I think that the fish rock might be a little too hard for your hermit crab because he needs soft enough sand to be able to molt and when they molt their skin is sensitive so the fish rock will probably make him uncomfortable.