a.
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According to the online content article about the sun, the sun sustains life on earth by
a.
providing light, heat, and energy
b.
revolving around the earth
c.
causing solar eruptions
d.
harming the earth’s biosphere
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Environmental differences within ecosystems are generally caused by
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According to the online content article about the sun, the sun sustains life on earth by
a.
a.
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