If a researcher wants to reproduce a previous study, she can do so in multiple ways. a(n) – involves re-creating previous work as closely as possible to the original. scientists can also conduct a(n) –, in which a study uses different procedures to re-create a similar finding to the original. finally, a(n) – involves copying the original experiment and including additional variables to answer new questions.

Jonathan purchases a comic book over the phone. the store does not promise a particular time in which the comic book will be shipped to jonathan. after 40 days, the comic book has not been shipped. do state or federal laws protect jonathan's rights in this case? what is the name of the law? select the best answer from the choices provided. a. federal law; the implied warranty of merchantability b. state law; the implied warranty of merchantability c. federal law; the mail and telephone order rule d. state law; the mail and telephone order rule

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

In exchange for land, a knight agrees to be a sort of sub-vassal to a vassal. this agreement was known as: investiture homage tyranny subinfeudation