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Sea level has been higher and lower than it is currently.

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15y ago

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What is the elevation of the central valley?

The valley is about 100 feet above sea level on average. There are areas that are higher and lower, but NO PLACE in the valley is below sea level. In the past the valley floor was lower, infact it was an inland sea, but tectonic action raised the valley floor and drained out the water.


What is the elevation of central valley California?

The valley is about 100 feet above sea level on average. There are areas that are higher and lower, but NO PLACE in the valley is below sea level. In the past the valley floor was lower, infact it was an inland sea, but tectonic action raised the valley floor and drained out the water.


How do geologists determine that sea level has fluctuated widely in the geologic past?

Sediments and rocks which have content such as sea shells indicate submersion at some particular era.


What is the geologic principle that the same geologic processes that operate today operated in the past to change Earths surface?

uniformitarianism


Energy efficiency as it flows from a lower to a higher trophic level?

Not all the energy is past on to the different tohpic levels, energy is lost through respiration, movement, feaces, decomposition, keeping warm and growth. Some amount of energy is also in the bones of the organisms because they are not eaten.


What evidence tells geologist Robert Fronk that sea level was once much lower than it is now?

Geologist Robert Fronk likely observed evidence such as ancient shorelines, submerged forests, or coral reefs found at higher elevations inland, which indicate past sea levels were lower. Additionally, sedimentary rocks with marine fossils found at higher elevations provide further evidence of a lower sea level. Isotopic analysis of ancient fossils and ice core data can also support the hypothesis of past sea level changes.


What is the definition of uniformitarianism?

The geologic principle that the same geologic processes that operate today operated in the past to change Earth's surface.


What is a palaeopolyploidization?

A palaeopolyploidization is the development of polyploid organisms in the geologic past.


Why is the geologic time scale used to show the Earth's history?

because the time span of earth past is so great geologic


Which word means the history of life in the geologic past as indicated by imprints or remains of living things?

fossial


What principle states that the geologic processes that operate today operated in the past?

uniformitarianism


Are fossil fuels produced today in the same geologic processes as in the past?

Yes.