scientists record the types of fossils found in different layers of sedimentary rock in one location. they…

scientists record the types of fossils found in different layers of sedimentary rock in one location. they observe that lower layers have more species than upper layers. which piece of evidence would help scientists understand the change in species numbers? a rate of sediment deposition b presence of cross - cutting volcanic intrusions c environmental conditions at the time of deposition d type of parent rock where the sediment weathered

scientists record the types of fossils found in different layers of sedimentary rock in one location. they observe that lower layers have more species than upper layers. which piece of evidence would help scientists understand the change in species numbers? a rate of sediment deposition b presence of cross - cutting volcanic intrusions c environmental conditions at the time of deposition d type of parent rock where the sediment weathered

Answer

Brief Explanations:

Environmental conditions at the time of sediment deposition can greatly influence the types and numbers of species present. Different environments support different species, and changes in environment over time can lead to changes in species numbers in rock layers. The rate of sediment deposition mainly affects the thickness of layers, cross - cutting volcanic intrusions are more about geological disruption rather than species numbers, and the type of parent rock affects sediment composition not directly species numbers.

Answer:

C. environmental conditions at the time of deposition