What do the different scientific theories about how life began on Earth have in common? (2 points)
A seed of life was started through meteorite bombardment.
Carbon-based molecules formed in an oxygen-poor environment.
Early life was aquatic because all of Earth was initially covered by ocean.
Early Earth had to warm considerably after its formation before it could support life.
A seed of life was started through meteorite bombardment.
Carbon-based molecules formed in an oxygen-poor environment.
Early life was aquatic because all of Earth was initially covered by ocean.
Early Earth had to warm considerably after its formation before it could support life.