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.
Look at context clues in your sources
The first one could be "care".
The second could be "rest".
Answer:
countries
Explanation:
Take the verb: hold (festivals)
The dates in the excerpt help the reader to determine that "American Indian Civil Rights” is structured by B. chronological order.
<h3>What is Chronological Order?</h3>
This refers to the arrangement of events based on the time of occurrence and date.
Hence, we can see that from the complete text, the author makes use of chronological order in order to show the dates in the excerpt and how they help reflect the author's ideas.
Read more about chronological order here:
brainly.com/question/13833510
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