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purpleberry purpleberry
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Posts: 1596
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7 years ago
Which human activity has directly contributed to global warming?
A) burning of coal
B) building of greenhouses
C) planting of trees
D) development of solar energy
Textbook 
Biology: Science for Life with Physiology

Biology: Science for Life with Physiology


Edition: 5th
Authors:
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AboonaAboona
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7 years ago
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purpleberry Author
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6 years ago
Thanks for helping me with this
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