What does the principle of faunal succession state?

a. rock layers with the same unique grouping of fossils are of the same geologic age.

b. absolute dating is required to determine the relative age of animals based on their fossils.

c. specific groups of organisms have followed one another in a definite sequence through the earth's history.

d. fossils are deposited in approximately horizontal layers and spread out until they reach a barrier.

The principle of faunal succession state "Specific groups of organisms have followed one another in a definite sequence through the Earth's history."

Explanation:

Faunal succession basically means is that the fossils of the flora and fauna of different eras can be found in a specific order and never in the same strata. This allows the geologists to determine the time sequence and also to identify the various strata by dating the fossils that are found in each of them. The older version of fossils are found beneath the fossils of modified versions. For example fossils of simple feathers that cannot support flight are found to be succeeded by fossils of more complex feathers.

the answer is: they rebelled against saddam hussein’s rule.

kurds opposed saddam rule and wanted independence. kurds in the north and shiites in the south revolt against hussein.

for example, the halabja attack in 1988 conducted against the kurdish people by the iraqi regime under saddam hussein, where between 4000 people are killed and around 9000 are injured.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.