They keep the elections fair and watch to make sure no one breaks the rules or try anything
Answer:
Rome has short, mild winters.
The correct answer is mixtures.
Salt water, vinegar, bronze, air, and beach sand are all mixtures, some of them more homogeneous or heterogeneous than others. A mixture, as the name itself says, is a blend of more than one element. So salt water is a mixture of salt and water, vinegar is a mixture of acetic acid and water, bronze is a mixture of copper and other metals, air is a mixture of nitrogen, oxygen, and other elements, and beach sand is a mixture of sand and water.
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>
