Answer:
mass of each sample.
Explanation:
The quantities that are able to change in an experiment or a research are called as the variables. It is a trait or any factor that exits in different types or amounts. An independent variable is changed by the scientist or the experimenter in the experiment. Its value does not depends on the experiment.
In the context, there are boxes of two dry samples of sand and they are examined by changing one of the parameter. It is the independent variable that is manipulated in the two samples is the mass of each of the sample.
Answer:
D) Because I care about the fate of the planet, I choose to recycle.
the first sentence is an adverbial clause while the second is an independent one.
Explanation:
an Adverbial clause is when a clause is dependent, that is <u>when it does not make complete sense on its own despite having a subject and a verb</u>. the presence of an adverb in the clause makes it not just dependent but an adverbial clause.
t<u>he first sentence has a subject(planet's fate) and a verb(care), the presence of Because makes it adverbial</u> and dependent on the next part of the sentence to make sense.
the rest of the sentence 'I choose to recycle' is complete on its own as it is a simple statement.
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An opinion most suitable to answer the question:
It might or may be early in the story and the author may not want the reader to form an opinion yet or perhaps the author is describing a minor detail and does not want to draw extra attention to it that could detract from something more important happening in the story.
