question 10 (1 point)\na scientist studies undisturbed sedimentary rock layers and records her findings in…

question 10 (1 point)\na scientist studies undisturbed sedimentary rock layers and records her findings in the diagram below.\nthe scientist is surprised that only the bottom layer has fish fossils.\nwhy are fish no longer found in the top layers of the rock column?\nenvironmental conditions changed.\nfossils in the bottom layer are older.\nsedimentary rock type is unchanged.\nfish appeared after the lizard and cactus.\nfish appeared after the lizard and cactus.

question 10 (1 point)\na scientist studies undisturbed sedimentary rock layers and records her findings in the diagram below.\nthe scientist is surprised that only the bottom layer has fish fossils.\nwhy are fish no longer found in the top layers of the rock column?\nenvironmental conditions changed.\nfossils in the bottom layer are older.\nsedimentary rock type is unchanged.\nfish appeared after the lizard and cactus.\nfish appeared after the lizard and cactus.

Answer

Brief Explanations:

Fossils are formed in different environmental conditions over time. If fish fossils are only in the bottom layer, it's likely that environmental conditions changed to a state where fish could not survive or be fossilized in the upper - layer environments. For example, the area may have changed from a water - dominated environment (suitable for fish) to a terrestrial one.

Answer:

Environmental conditions changed.