What was one effect of new technology in farming after world war 2?

To confirm when to exclude children from school it’s recommend that you refer to guidelines from which of the following organizations

Restricting immigrants from entering a country may be based on what belief?  

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.