How The Earth Was Formed Step By Step? Starting 6600 million years ago, the stages involve the formation of the core, the formation of the mantle, the formation of oceanic-type crust, the formation of ancient platforms, and consolidation (the present stage) after which there will presumably be no more earthquakes or volcanic activity. How was
How Was The Olduvai Gorge Formed? Olduvai Gorge was created by the erosion of an incised valley draining water from the Ndutu lake into the OlBalBal depression located at the foot of Ngorongoro. It is part of the Serengeti migratory ecosystem. When was Olduvai Gorge formed? Olduvai Gorge was formed about 30,000 years ago, the
In Which Type Of Rock Were The Fossils Most Likely Found? Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved. Which type of rock is most likely to be found? Sedimentary rock has the most fossils.
In Which Landscape Region Might We Find The Placoderm Fish Index Fossil? The timeline below represents time on Earth from the beginning of the Paleozoic Era (A) to the present (B). Which numbered position best represents the time when humans first appeared in the fossil record? The diagram below represents the placoderm fish Bothriolepis, an
In Which Layer Of Rock Are Scientists Most Likely To Find A Shark Fossil? Parts of Florida have been underwater on and off for millions of years. Most fossil shark teeth are found in sedimentary rock where the layers were once at the bottom of shallow areas of the ocean. So a great deal of
Is Rock A Fossil? Fossils are the preserved remains, or traces of remains, of ancient organisms. Fossils are not the remains of the organism itself! They are rocks. … Bones, shells, feathers, and leaves can all become fossils. How can you tell if a rock is a fossil? It is also a good idea to
How Does This Difference Show That Whales And Animals With Four Legs Are Probably Descended From A Common Ancestor? Whales’ ancient ancestors had legs and could walk on land. How does this difference show that whales and animals with four legs are probably descended from a common ancestor? Because of the homologous structures. … It
How Do Index Fossils Help Scientists? Fossils are used to determine the ages of rock layers. … Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in. How is
How Do You Make A Mold Fossil? Give each student a ball of reusable or modeling clay or salt dough. Roll, soften and flatten the clay. This represents the sediment such as sand or silt. Press the shell, or other object, into the clay. Very carefully remove the shell from the clay. How do you
Is There Evidence Of Defensive Adaptations In Mollusc Populations Exposed To Predators Quizlet? Is there evidence of selection for defensive adaptations in mollusc populations exposed to predators? The fossil record provides evidence that predator-prey interactions may have shaped the course of animal evolution. What is a transitional fossil quizlet? Transitional fossils have features that are