EARTH SCIENCE
FOSSILS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Quick burial of organism
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Layers of sediments build up over the organism
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Slow burial of organism
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Exposed to the elements (water, wind, ice, sun)
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Left for a long period of time
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Detailed explanation-1: -The organism generally must have hard parts such as shell, bone, teeth, or wood tissue; the remains must escape destruction after death; and the remains must be buried rapidly to stop decomposition. This does make the fossil record biased because animals with soft bodies are less likely to form fossils.
Detailed explanation-2: -Answer: Fossils are defined as the remains or traces of organisms that died more than 10, 000 years ago, therefore, by definition the minimum time it takes to make a fossil is 10, 000 years. But, that is just an arbitrary line in the sand – it means very little in terms of the fossilisation process.
Detailed explanation-3: -Two conditions that favor the preservation of an organism as a fossil are RAPID BURIAL and HARD PARTS.
Detailed explanation-4: -The animal is likely to be fossilized only if it is buried soon after it dies (or when it is buried alive!). Even then, it is likely to decompose, because water that seeps through the sediment around it usually is rich in oxygen. Sometimes, however, the body is buried rapidly by fine mud.