Which of the following statements about map types is false?
a contour lines show elevation on topographical maps
b. climate maps often use color to indicate differences in climate zones.
c. special purpose maps frequently use images and keys for identification.
d. physical maps are not used to display elevations or the earth's features.

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.