EARTH SCIENCE
FOSSILS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Were there mountains in Louisiana 30 years ago?
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What was the climate like in Louisiana 30 years ago?
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Were there earthquakes in Louisiana 30 years ago?
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What type of animal lived in Louisiana 30 years ago?
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Detailed explanation-1: -The fossil plants are indicative that the area had a warm climate without extended periods of winter temperatures below freezing, along with adequate moisture in the air for growth.
Detailed explanation-2: -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-3: -Which best explains how index fossils found in sedimentary rock layers can be used to determine the approximate age of a rock layer? Each index fossil was formed during every geologic time period.
Detailed explanation-4: -Index fossils are useful because they tell the relative ages of the rock layers in which they occur. Geologists use particular types of organisms, such as trilobites, as index fossils.