Answer:
88% of rocks are almost completely devoid of fossils
Explanation:
Precambrian era which means "Before the Cambrian period". Geologists have found that there are some hard to discern fossils in some Precambrian rocks. Precambrian covers almost 90% of the entire history of the Earth whereby 88% of rocks are almost completely devoid of fossils which has been divided into three eras: The Hadean, The Archean and The Proterozoic
The correct answer is C. A large group moves up or down the class ladder due to societal changes
Explanation:
In sociology, the word "mobility" or "social mobility" describes a change in the social structure or stratification system usually as people move to a higher social class or level or to a lower one. Additionally, this mobility is usually caused due to changes in society and can be of different types as if mobility involves a change in the class through generations it is called intergenerational mobility but when it involves a large group that moves up or down the structure of society or the class ladder this is called structural mobility, which is caused by major societal changes that affect not only an individual but a large group. Therefore, structural mobility occurs when a large group moves up or down the class ladder due to societal changes.
Because authoritarian and totalitarian systems allow their leaders to exert unlimited control over their citizens, they can do as they please and their subjects cannot do anything against their rule.
