Ican't figure out how to explain this

Who needed protection from railroads? 1865-1900 apush

What is the difference between a census and a study that is not a census? select one: a. a census by definition extends over a long period of time. b. a census involves interviews. c. a census collects data on the entire study population. d. a census involves a written survey.

What statement is true about all chemical changes? a) chemical changes can be undone. b) chemical changes cannot be reversed. c) chemical changes change the color of objects. eliminate d) chemical changes do not form new products.