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In the experiment with peacock butterflies, researchers noticed that the butterflies folded their wings and made hisses and clicks in the presence of bird predators. They therefore hypothesized that these behaviors helped the butterflies escape predation. Next, they predicted that removal of the spots on the butterfly's wings and/or removal of the ability of the butterfly to hiss and click will result in a greater risk of predation. To arrive at the hypothesis, the researchers used ____, while developing the prediction used ____.
Continuing Rise
An ongoing increase or upward trend in a particular metric, such as price, value, or volume.
Recession
A decline in production, employment, and income.
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