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.
Prepositions are anywhere a mouse can go. So words like through, under, or over. I only see one prepositional phase, which is “Andrew ran through the hallway.”
Central idea refers to the main or principal thing that unifies the features of a story. It can also be said to
Please note that your answer is incomplete, therefore I will give you a general overview which should help you in getting the right answer. You didn't
There are several elements of a story which includes:
- Plot
- Characterization
- Setting
- Theme, etc
There are ways to identify a central idea in a text such as:
- Make sure you understand the topic
- Make an objective summary
- Look through the text again, especially the first and last sentence
- Identify ideas that have been repeated
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the letter P of president
