It was once thought that pesticide TSX–400 was extremely harmful to the environment but that pesticides Envirochem an...

Claudia on March 10, 2017

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Why isn't the answer e?

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Mehran on March 13, 2017

@Claudia the problem with (E) is that this is not about one of these pesticides being "harmless."

The stimulus is a comparative discussion of the environmental harm of these pesticides, i.e. "Envirochem and Zanar cause greater environmental harm than does TSX-400."

Hope this helps! Please let us know if you have any other questions.