a. electron
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What is the name of the positively charged particle in the center of an atom?
a. electron
b. neutron
c. nucleus
d. proton
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Which greenhouse gas is emitted when burn fossil fuels for energy? a. nitrogen b. oxygen c. carbon dioxide d. helium
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What is the name of the positively charged particle in the center of an atom?
a. electron
a. electron
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