What factor makes class systems open?
they allow for movement between the classes.
people are more open-minded.
people are encouraged to socialize within their class.
they do not have clearly defined layers.

Which of the following discoveries would be most likely to cause a scientific paradigm shift? a. the discovery of more rings around uranus b. the discovery of a new pathogenic virus transmitted by mosquitoes c. the discovery that a dormant volcano is showing signs of activity d. the discovery of a new species of salamander in the amazon rainforest e. the discovery that excess heat is radiating from the center of the earth and causing global climate change

Which is relatively better: a score of 76 on a psychology test or a score of 22 on an economics test? scores on the psychology test have a mean of 90 and a standard deviation of 13. scores on the economics test have a mean of 52 and a standard deviation of 10.

In the 1600s, the american colonies passed many laws that affected the rights and activities of specific groups of people. which of the following was one of these laws?slaves were defined as servants for apex