The scientific peer-review process ensures that
A) scientific studies have proper design and methods and are free from bias.
B) all scientific studies receive publication despite the level of bias.
C) the results of scientific studies are permanent and certain.
D) all published scientific studies have clearly defined control groups.
Question 2
Nonpersistent pesticides can be more dangerous than persistent pesticides because they usually
A) are more toxic.
B) last longer in the environment.
C) are radioactive.
D) are broken down into nontoxic products within a few weeks of application.
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