(pls im on a timer) how have paleontologists contributed to humans' understanding of the history of life? check all that apply. they created a record of life on earth. they grouped organisms by their similarities. they grouped organisms by the period in which they existed. they discovered that the first humans lived with dinosaurs. they discovered that life has existed since earth was created.

What types of jobs typically are found in ghetto, inner-city neighborhoods? a. low-wage positions, typically in retail outlets, that require little education b. professional positions with banks, doctors' offices, and other similar businesses c. hourly factory and manufacturing positions d. positions that require advanced education, such as those in financial or technology firms select the best answer from the choices provided.