Science Test Prep

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previously assigned in class: test prep from the textbook (see identifying information at bottom of graphic)


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note the help with number one: circles and marks on the problem itself as well as additional text to give more information
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note that there is help for number two if you closely at this graphic.
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The answer has to be C. Notice that the graphic shows the carbon going into the atmosphere (nonliving, also known as abiotic).
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explanations for the correct answer for number 4
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That's right: "the number of particles in a substance" (Which letter choice is that?)
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page 57 from the same textbook; the rest of the test prep assignment