EARTH SCIENCE
FOSSILS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The mountain range was once under water
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Birds flying overhead dropped the clam shells.
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Animals released the clam shells in in their waste.
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The clams lived on land before they moved to water.
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Detailed explanation-1: -Which answer best explains why fossils are sometimes found at or near the surface? Fossils are less dense than rock, so they rise to the surface.
Detailed explanation-2: -Fossils are the remains or traces of ancient life that have been preserved by natural processes, from spectacular skeletons to tiny seashells. Imprints, tracks and trails can also become fossilised, like dinosaur footprints or worm burrows. These are called trace fossils.
Detailed explanation-3: -This method is called radiometric dating, and it involves the decay, or breakdown, of radioactive elements. Using radiometric dating techniques, it became possible to determine the actual age of a sample.
Detailed explanation-4: -Fossils form in five ways: preservation of original remains, permineralization, molds and casts, replacement, and compression.