9)
which of these is the best definition of the word "culture"?
a) the way of life of a group of people, including their language, beliefs, holidays, music and food.
b) something that is very important and valuable, usually has religious meaning.
c) another name for people who decide to leave their home country.
d) another name for people who are older than most other people.

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true. b) some other scientific experts read the papers and provide quality control by eliminating many mistakes. c) an editor reads the papers, to make sure that all the semicolons are in the correct places. d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog. e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.