EARTH SCIENCE
FOSSILS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The area was once a valley
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The area was once a desert
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The area was once covered in ice
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The area was once an ocean
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Detailed explanation-1: -12. If you find fossils of fish and other marine creatures in a desert, what can you infer about the history of the desert? Marine fossils discovered in a desert environment indicate that at one time, the desert must have been an aquatic environment.
Detailed explanation-2: -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-3: -Which reason best explains why fossils of this animal are found on both continents today? The ocean between the two continents was once frozen, and the Mesosaurus traveled across the ice.
Detailed explanation-4: -One group of small ones is called microfossils. Another group of even smaller fossils is called nannofossils and they require very powerful microscopes to be seen. Just by the name of the group, scientists can estimate how small the fossil will be before they ever even look at it.