Cast fossils form when an organism decays after being buried in soft material, leaving a mold, while impression fossils preserve direct imprints like footprints made in soft material that hardens.
Cast and Impression Fossils: 1) Fossils are formed when an organism is buried in a soft material 2) The organism decays, leaving a cast of itself 3) Footprints can also be pressed into these materials when soft, leaving an impression when it hardens
| Original | 1) Fossils are formed when an organism is buried in a soft material 2) The organism decays, leaving a cast of itself 3) Footprints can also be pressed into these materials when soft, leaving an impression when it hardens |
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| Title | Cast and Impression Fossils |
| Settings | 1,1,0 | n,n,n,n |
| Text1 | 1) Fossils are formed when an organism is buried in a soft material ... ... |
| Text2 | 1) Fossils are formed when an organism is buried in a soft material 2) The organism decays, leaving a cast of itself ... |
| Text3 | ... 2) The organism decays, leaving a cast of itself 3) Footprints can also be pressed into these materials when soft, leaving an impression when it hardens |
| Full | 1) Fossils are formed when an organism is buried in a soft material 2) The organism decays, leaving a cast of itself 3) Footprints can also be pressed into these materials when soft, leaving an impression when it hardens |
Tags: b6, bio, fossils
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