What general conclusion is drawn from the depth at which fossils are found?
Answer and explanation
Correct answer: Fossils in deeper layers are generally older
The relevant principle is relative dating of sedimentary rock layers. When undisturbed layers accumulate, lower layers were deposited earlier and upper layers later. Consequently, fossils preserved in deeper layers are generally older than fossils in layers above them. Option A expresses this conclusion. The word “generally” is important because geological disturbance can overturn or mix layers, so “always” in option B is too absolute.
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What is the correct answer to this question?
Fossils in deeper layers are generally older
Why is this the correct answer?
The relevant principle is relative dating of sedimentary rock layers. When undisturbed layers accumulate, lower layers were deposited earlier and upper layers later. Consequently, fossils preserved in deeper layers are generally older than fossils in layers above them. Option A expresses this conclusion. The word “generally” is important because geological disturbance can overturn or mix layers, so “always” in option B is too absolute.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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