You are examining a bacterial smear on a light microscope. You observe pinkish-red bacilli and blue cells of various shapes. You are probably looking at a smear prepared with the stain.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.