a. true
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According to astronomers, the big bang occurred approximately 14 billion years ago.
a. true
b. false
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Drag each label to the correct location. each label can be moved more than once match the properties with the subatomic particle
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What are tissues? a groups of tissues that work together b basic units of structure and function c groups of cells that perform the same function d multiple organs that perform a major function
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The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a. an ionic bond is formed between the oxygen and carbon atoms. b. four valence electrons are shared. c. two valence electrons are shared. d. valence electrons are shared between oxygen atoms.
Answers: 1
According to astronomers, the big bang occurred approximately 14 billion years ago.
a. true
a. true
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