Because research in the united states has demonstrated that adolescents are not very respectful to the elderly, sara concludes that all adolescents everywhere in the world are disrespectful to the elderly. this is an example of

The correct answer is ethnocentrism. Ethnocentrism is defined as an evaluation of other cultures by which are being based to preconceptions that originates from one’s standards and customs of their own culture or the culture that they were born from.

i believe

clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

hope this

i am brianly

sorry if this doesn't

answer; with few regulations protected the prices of crops which made farmers leave their farms and migrate to the big cities to work in factories;