The independent variable is the temperature.
The study aims to assess how the temperature level 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 temperature (<em>the cause</em>), trigger the emergence of a certain type of mood <em>(the effect).</em>
Answer:
Having Halloween on a Saturday could be dangerous because people could be drunk driving and that could be dangerous for people who are walking in the streets trick or treating.
Explanation:
One organism benefits while the other is harmed
B.
Speaker of the house is voted on by the House. The Senate has nothing to do with it. Campaign staff isn't controlled by anybody but the campaign manager (or theoretically the candidate), and definitely not the Senate. The Senate doesn't veto legislation, it votes on it. The Senate does, however, confirm the President's major appointments (Cabinet members and other secretaries).
