Put the stages of the formation of a dead zone in their correct order. Large number of fish and other marine life die, surface biomass blocks sunlight and prevents photosynthesis, high levels of microbial activity consume oxygen, excessive amounts of nitrogen and phosphorus promote aggressive biomass growth, surrounding water becomes hypoxic or anoxic, root vegetation and phytoplankton decompose.

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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.