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a. a microscope |
d. the Earth |
h. an experiment |
l. a plant |
p. a planet |
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b. a telescope |
e. a battery |
i. an atom |
m. DNA |
q. fire |
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c. a meteor |
f. chemicals |
j. mold |
n. electricity |
r. a magnet |
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g. a scientist |
k. a satelite |
o. bacteria |