History of earth

By happychap
  • 425

    First land creatures

    First land creatures
    (Date:425,000,000BCE) The first land dwelling creatures evolved. I believe this is important because lots of creatures live on land now and earth would be a completely different place if that wasn't so.

  • cells evolve

    cells evolve
    (Date: 3,800,000,000) The first simple cells evolve with more advanced reproductive systems. I believe this important because without cells life could never advance very far.

  • RNA evolves

    RNA evolves
    (Date: About 4,000,000,000BCE) The first reproductive systems evolve. I believe this is important because evolution could never happen otherwise.

  • Earth begins

    Earth begins
    (Date: 4,540,000,000) A star explodes and earth is created out of the atoms fused in the explosion. I believe this is important because without earth this timeline would be impossible.