Because it represents 2 atoms of carbon not 2 molecules of carbon
I used to know this. I don't really remember but is used to know it. Im in 6th grade now
Answer:
When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust.
