Question

which best explains a primary reason for the inability of life to exist in earths early atmosphere? there was insufficient energy from material collisions to change their density. high temperatures during precambrian time caused surface water evaporation. volcanic eruptions and comet collisions added different gases to the atmosphere. available oxygen was used to help create an ozone layer within earths atmosphere.

Explanation:

Life as we know it requires liquid - water and a suitable atmosphere. High temperatures during the Precambrian time caused surface water evaporation, making the environment inhospitable for life. Insufficient energy from material collisions is not directly related to life - existence in terms of atmosphere. Volcanic eruptions and comet collisions adding gases is a general fact about atmosphere formation but not the primary reason for life's non - existence. The use of oxygen to create an ozone layer is a later development and not a reason for life's inability to exist in the early atmosphere.

Answer:

High temperatures during Precambrian time caused surface water evaporation.