What controversies have the agencies discussed in this section encountered? What issues or problems tend to lead to such controversies?

The correct answer to this open question is the following.

You did not include any reference, text, or further context. We do not know what is the topic of controversy.

However, by doing some research we can help you with the following.

If you are referring to the controversy between formal science vs. pseudoscience, then the issues or problems that tend to lead to such controversies are the lack of evidence used by pseudoscientists when trying to prove something.

True scholars and scientists know that the scientific method is the only way to validate a phenomenon. The results can be repeated one, two, and three times, and scientists had to validate the results every single time. Then, we can say that something has scientific support and validation.

On the contrary, pseudoscientists often times do not include validation, just opinions, and general comments based on their own perspectives.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

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a trial judge has broad powers in his courtroom. the judge's decision is usually final for the duration of the trial, and the party's one special type of witness is an expert witness.