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11 April, 09:23

Susan Solomon hypothesized that ClO levels would be increased if ozone depletion came about because of CFCs. Her team found elevated levels of ClO in support of her hypothesis by measuring the composition of the atmosphere where the ozone hole was found, and also by analyzing light reaching the ground to determine whether it was changing in the region with less ozone and more ClO. Was this an observational or experimental study?

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  1. 11 April, 09:32
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    It is an observational study

    Explanation:

    In an observational study, nothing changes, all the researcher has to do is to record findings, it is a study that involves the collection of data in a real-world setting without intentionally manipulating any variable. On the contrary, an experimental study involves the manipulation of variables, you have the control group and the test group, the test group is subjected to the treatment.
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