Final answer:
During the Hadean Eon, early Earth had a molten surface, heavy bombardment, no oxygen-rich atmosphere, and liquid water on the surface, but no presence of life forms.
Step-by-step explanation:
The conditions of early Earth at the time that life first evolved during the Hadean Eon can be summarized as follows:
- Molten surface and heavy bombardment: Earth was initially molten and experienced intense impact events.
- No oxygen-rich atmosphere: There was no significant amount of oxygen in the early Earth's atmosphere during this period.
- Liquid water on the surface: Geologic structures such as lava pillows and stromatolites indicate the presence of liquid water on the surface.
- No presence of life forms: Life had not yet emerged during the Hadean Eon.