What do scientists believe is the determining factor that causes skin color variations in groups of humans around the world? a. genetics – two people with the same skin color are more likely to be genetically related, even if they come from different parts of the world b. diet c. ultraviolet radiation exposure in a society over a long period of time d. vitamin deficiencies

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

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he supported the seperation of church and state. he also promoted religious tolerance.

so they can differentiate themselves from others as they saw themselves as the superior race. the star was basically a symbol that meant you are a less of a person than i am because of my race. the star was also degrading for those who had to wear it because they were aware of this and the nazis used the notion to make them feel less like a person.

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.