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प्रश्न
If the fossil of an organism is found in the deeper layers of earth, then we can predict that ______
विकल्प
the extinction of organisms has occurred recently
the extinction of organisms has occurred thousands of years ago
the fossil position in the layers of Earth is not related to its time of extinction
time of extinction cannot be determined
उत्तर
If the fossil of an organism is found in the deeper layers of earth, then we can predict that the extinction of organisms has occurred thousands of years ago.
Explanation:
Fossils found in the deepest layers of earth are the oldest ones. From these, scientists conclude that the extinction of an organism has occurred thousands of years ago.
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संबंधित प्रश्न
What are fossils?
How fossils formed ?
Describe in brief two methods of determining the age of fossils.
What is embryology?
Some of the important fossils which have been studied are those of organisms X, Y and Z. X were marine arthropods which were common between 400 to 600 million years ago. Y were the invertebrate animals (molluscs) with a flat, coiled, spiral shell which lived in the sea about 180 million years ago. Z are the extinct carnivorous or herbivorous reptiles which appeared on the earth about 250 million years ago and became extinct about 65 million years ago. What are X, Y and Z?
List three factors that provide evidences in favour of evolution in organisms and state the role of each in brief.
Paleontologists deal with ______.
Birds have evolved from reptiles.
Why is Archaeopteryx considered to be a connecting link?
How can you determine the age of the fossils?
