On early Earth,more than 4 billion years ago,environmental conditions were very different from those today because
A)only early Earth was intensely bombarded by large rocks and ice from space.
B)only early Earth had an oxidizing atmosphere.
C)less ultraviolet radiation penetrated early Earth's atmosphere.
D)early Earth's atmosphere had significant quantities of ozone.

Question

Quizplus · Accepted Answer

Early Earth was intensely bombarded by large rocks and ice from space, leading to volcanic activity and a lack of stability in the environment. This constant bombardment would have made environmental conditions very different from those today.

On Early Earth,more Than 4 Billion Years Ago,environmental Conditions Were