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Sponges are bottom-dwelling creatures that attach themselves to something solid, such as a rock. They rely on the system of the water canal to deliver food and oxygen to them. Sponges consume plankton.
Not necessarily. While nearly all fossils, including seashells, are found in sedimentary rock, most sedimentary rock does not contain fossils. Even then, those fossils will not necessarily be seashells. If you do find a rock with seashells, though, you can be pretty much guaranteed that it is sedimentary.
Magical Seashells.
limestone
A rock that contains fossil seashells was most likely formed as a result of sedimentation.
A rock that contains fossil seashells was most likely formed as a result of sedimentation.
seashells are rocks. this would be because seashells are made out of minerals and formed by some of the same things as rocks. if you looked close enough at certain shells then you would see that seashells are alike with certain kinds and shapes of rocks.
limestone is mostly seashells
Limestone.
No Seeds come from living things. Fossils are rock impressions of living creatures and are themselves not alive.
Coquina is a form of limestone made of seashells and seashell fragments.
They clam-up. Clams have two concave shells that they can clamp tightly together, totally encasing themselves in hard limestone. Snails withdraw into their hollow shells and have a little trap-door they can close behind themselves. Limpets have only one concave shell on their backs however they clamp themselves down hard on a rock so their shell covers them completely.