EVOLUTION
EVIDENCE FOR EVOLUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Upper rock layers were deposited earlier than lower rock layers
|
|
|
Lower rock layers were deposited earlier than upper rock layers
|
|
|
Older fossils contain relatively higher levels of radioactive isotopes than younger fossils
|
|
|
Younger fossils contain relatively higher levels of radioactive isotopes than older fossils
|
Detailed explanation-1: -The principle of superposition states that in an undeformed sequence of sedimentary rocks, each layer of rock is older than the one above it and younger than the one below it (Figures 1 and 2). Accordingly, the oldest rocks in a sequence are at the bottom and the youngest rocks are at the top.
Detailed explanation-2: -RELATIVE DATING relative age-older or younger-is based on the location where a given fossil occurs in a layered sequence of sedimentary rocks. fossils buried in the lower layers are older than those encased in the upper strata, which were formed by more recent deposits.
Detailed explanation-3: -Principle of Superposition: In an otherwise undisturbed sequence of sedimentary strata, or rock layers, the layers on the bottom are the oldest and layers above them are younger.
Detailed explanation-4: -law of superposition, a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence.
Detailed explanation-5: -Relative dating is the science of determining the relative order of past events (i.e., the age of an object in comparison to another), without necessarily determining their absolute age (i.e., estimated age).