Is this actually a homework question or are you giving ur personal opinion here?
Angela Warren...look at the superscript number after the sentence that references the flying buttresses and them look below to the source that corresponds with that number (3)
The dependent variable is the mood of the participants.
The study aims to assess how the level of exercise (measured by the amount of time spent) affects another variable, that, in turn, will be the dependent variable: the mood of the participants. The aim of the study is to conclude whether it is possible or not to infer causality between those two, in other words, to see whether different levels of exercise (<em>the cause</em>), trigger the emergence of different types of mood (<em>the effect</em>).
The early people were able to adapt by settling into the different regions of the Americas, and taking advantage of the resources around them, for example the hot vegetated forests of the Amazon.
