fossils
Well there are 3 types of fossils: Petrified Fossils, Molds and Cast, and Preserved Remains. Petrified Fossils are the organisms buried in the layers of sediment. Molds and Casts are the organisms, like shells, buried by sediments, in which they gradually dissolve. Preserved Remains are the organisms preserved in other substances. For example, entire organisms, such as huge elephant-like mammoths that lived thousands of years ago, have been preserved in ice. Therefore, Preserved Remains is a major type of fossil that does not form in sediments. This can be formed by decades of being stuck in the ice age and eventually falling through the ice and never getting out. Since you cant get out you get frozen! Being frozen and preserved in another type of substance in called... Preserved Remains! --Hope this could help. Thanks for reading.:)
Recycled or Replaced.
Decomposers
They initially are formed by moving water which arranges sediment in patterned formations. If the ripples in the sediment are covered with other sediments before being obliterated, or if the ripple marks dry, and are then covered with subsequent sediments, they may eventually be preserved in the rock strata.
Patrick ferrenbergs flanel
Petrified fossils are organisms preserved I'm other substances such as amber, tar, ice, or other substances
Well there are 3 types of fossils: Petrified Fossils, Molds and Cast, and Preserved Remains. Petrified Fossils are the organisms buried in the layers of sediment. Molds and Casts are the organisms, like shells, buried by sediments, in which they gradually dissolve. Preserved Remains are the organisms preserved in other substances. For example, entire organisms, such as huge elephant-like mammoths that lived thousands of years ago, have been preserved in ice. Therefore, Preserved Remains is a major type of fossil that does not form in sediments. This can be formed by decades of being stuck in the ice age and eventually falling through the ice and never getting out. Since you cant get out you get frozen! Being frozen and preserved in another type of substance in called... Preserved Remains! --Hope this could help. Thanks for reading.:)
Well there are 3 types of fossils: Petrified Fossils, Molds and Cast, and Preserved Remains. Petrified Fossils are the organisms buried in the layers of sediment. Molds and Casts are the organisms, like shells, buried by sediments, in which they gradually dissolve. Preserved Remains are the organisms preserved in other substances. For example, entire organisms, such as huge elephant-like mammoths that lived thousands of years ago, have been preserved in ice. Therefore, Preserved Remains is a major type of fossil that does not form in sediments. This can be formed by decades of being stuck in the ice age and eventually falling through the ice and never getting out. Since you cant get out you get frozen! Being frozen and preserved in another type of substance in called... Preserved Remains! --Hope this could help. Thanks for reading.:)
because it has oxygen and reused by other aquatic organisms
Bioturbation refers to the reworking and mixing of sediments due to biologic activity. Worms and other burrowing organisms are common producers of bioturbated sediments.
River sediments
A science paper funnel is for filtering fine particles, called sediments, from suspensions, which are substances with these sediments in them. Sediments could include sand in water, or even dust in air, and other small particles.
Recycled or Replaced.
When organisms die, substances in their bodies are broken down and released into the environment. The substances can then be used again by other living organisms. This information was retrieved from the New York science grade 6 textbook from Glencoe science.
There isn't, of course, a gap in time. There are, however, very few fossils intermediate between simple stromatolites (the first more or less multicellular organisms) and the first complex organisms found just before the Cambrian Explosion. This gap most likely exists because while predation already existed (organisms consuming other organisms), no organisms had yet developed an internal or external skeleton that could have been preserved at death. The very few organisms from that era that were preserved despite of this, were preserved in the form of molds and casts.
Decomposers.
Decomposers