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Question
The Bormann-Likens study in the Hubbard Brook Experimental Forest in New Hampshire can be described as ____.
a. a comparison of a control site with an experimental site in nature
b. a study using computer model simulations of a complex natural system
c. an experiment in which too many factors were varied to draw a conclusion from the results
d. missing a baseline for comparison, making it difficult to draw a conclusion from the results
e. an observational study that attempted not to interfere with a natural system
Answer
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