According to the Scientific Method, in order to make a controlled experiment you NEED to have an hypothesis.
A controlled experiment consists of a test done by a scientist in which only one or a few variables are changed while the others remain constant in order to prove or disprove a hypothesis. This hypothesis is key to said experiment because it provides the starting point from which the professional can begin the procedure, as it helps focus on the subject that one is trying to get results from. Without a clear hypothesis, the outcome of the experimentation will not be valid nor specific.
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is this ok..? Do describes the time of when his girlfriend saw how poorly Anh was treated by a security guard. He explains how racism was/is an everyday part in his life and how he did not seem to notice how much it happened, as he was so used to it.
<span>In fact, it seems like the room and its creepy atmosphere might really be getting to our speaker. Even the rustling sound of the curtains seems sad to him .As he listens, he begins to really freak out, his head filling with "fantastic terrors."His heart starts to beat faster too; to calm himself down, he has to tell himself (twice) that the knocking sound he hears is just a visitor.<span>The more he says it though, the more we all know that it can't just be that, or at least not the kind of visitor he might be expecting…</span></span>
A.the consequences of fame and health!
