Difficulty: Easy
Average Score: 100%
Carbon is identified by the symbol "C" on the periodic table. Each carbon atom is made of six protons and six neutrons, giving it an atomic mass of twelve. The way the atoms are arranged gives carbon its form. Sometimes carbon is combined with other substances to create useful items, such as pencil lead. When mixed with oxygen, carbon forms carbon dioxide (CO2). People exhale carbon dioxide when they breathe, and carbon dioxide gives soda its bubbles.

Which of the following best describes the point of view of the passage?

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