Answer:
C. The scientist's conclusion is flawed because the number of hours of sunlight changed and, therefore, the experiment is not controlled.
Explanation:
A controlled experiment is an experiment used to test a single variable at a time. The variable that is being tested is called the independent variable, and it is directly manipulated by a scientist. The rest of the variables need to remain unchanged in order not to get wrong results like the scientist in the given scenario.
As the scientist is trying to see how gamma rays affect marigolds, only the gamma ray exposure is supposed to change throughout the experiment. The amount of water remained the same, but the number of hours of sunlight didn't. That's why we don't know what exactly affected the growth of marigolds - the sunlight or the gamma rays? And that's why the scientist's conclusion is flawed.
Answer:
I am unable to see the sentences.
<span>There option was to teach people the religion.</span>
The given phrase means that a person with bad temper never gets better or change with age nor does a sharp tongue changed. Instead, a sharp tongue or someone who is constantly nagging only gets better with the constant nagging.
The given phrase is from Washington Irving's "Rip Van Winkle". The story revolves around Rip Van Winkle and how his 'sleep' in the woods resulted in a loss of years where everyone had seemed to be gone while he was asleep in the woods.
- The phrase was spoken by the narrator while describing Rip Van Winkle.
- The phrase <em>"a tart temper never mellows with age"</em> means that a person with a sour or even a bad temper never changes with age.
- This, in other words, means growing old has nothing to do with a person's change in attitude or temper.
- Likewise, the continuing phrase <em>"a sharp tongue is an only edged tool that grows keener by constant use"</em> also refers to a person's character or attitude.
- The phrase meant that someone who is good at nagging or complaining only gets better with constant use of the mouth/tongue.
- This means that a person who's constantly nagging will only find better words and actions to further the nagging.
The given phrase is a metaphor that the speaker made to highlight a person's behavior, attitude. This phrase can be seen or found in Irving's short story.
Learn more about Rip Van Winkle here:
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