Across
- 2. First living organisms able to metabolise and reproduct.
- 3. An opening in the Earth's crust allowing hot magma and gases to escape from below the surface.
- 5. The theory saying that the life on Earth came from outer space.
- 7. In the Earth's early atmosphere were many gases. One which is present today, wasn't there. Which?
- 9. Chemical substance increasing the speed of chemical reaction. Not consumed by the reaction itself.
Down
- 1. Gaseous envelope of the Earth
- 4. dirt, earth
- 6. Chemical compound forming proteins by polycondensation.
- 8. Supramolecular complex made of thounsands simple molecules by chaining themselves together.
- 10. Adenosine triphosphate