The diagram models a cross-section of rock from a certain region. The life form represented by the fossil in rock layer 1 is not present in any of the layers above it. What is the most likely explanation for this?
A.
The life form only recently moved to the region.
B.
The life form became extinct in the region long ago.
C.
The life form only recently evolved.
D.
The life form evolved into all of the species in the next layer.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.