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Biology, 22.06.2019 05:30
The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen
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Biology, 22.06.2019 12:30
Are the layers of rock above and below the coal older or younger?
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Biology, 22.06.2019 20:40
Lumps of iron and manganese ore called can be harvested from the seafloor near underwater volcanoes.
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What constant variable are needed to grow a plant?...
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