Earth and RNA

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Across
  1. 1. (2 words) The hypothesis about the formation of the Earth's moon.
  2. 2. 4.2 (blank) years ago when the Earth was bombarded by asteroids and comets.
  3. 3. Sheets of microbes that form pillow-like formations.
  4. 4. The Earth layer that was formed by the cooling of Earth and the condensation of water present in the atmosphere to form Earth's oceans.
  5. 5. The people who formed the RNA World Hypothesis were Leslie Orgel, Carl _______, and Francis Crick in the 1960s.
Down
  1. 1. (2 Words) The RNA World hypothesis was that earlier forms of life may have relied solely on RNA to store ________ _________.