In late nineteenth-century debates on American immigration, many scholars and government officials privileged immigrants from northern Europe over those from southern Europe, such as Italians and Greeks, because the officials felt these southern people were a separate and inferior biological race with primitive ways. This is an example of:A. ethnocentrism. B. elitism. C. genocide. D. ethnocide. E. caste boundaries.

Option A.

Explanation:

Ethnocentrism is a major factor in the divisions among members of different ethnicities, races, and religious groups. It's the belief that one's ethnic group is superior to another.

It is also the evaluation of other cultures according to preconceptions originating in the standards and customs of one's own culture.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."