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