Question

how life began origins nova neil degrasse tyson hd
how did the buildup of oxygen help subsequent evolution?
it allowed complex organisms to tolerate more uv radiation
it prevented photosynthesis from continuing
it removed all atmospheric gases and cooled the planet
it forced life back into oceans permanently

Explanation:

Oxygen buildup led to the formation of the ozone layer. The ozone layer absorbs a significant amount of UV radiation. With less harmful UV radiation reaching organisms, complex organisms could better tolerate the radiation environment, which was beneficial for their survival and subsequent evolution.

• Option 2: Oxygen is a by - product of photosynthesis. An increase in oxygen does not prevent photosynthesis. In fact, photosynthetic organisms continued to evolve.
• Option 3: Oxygen did not remove all atmospheric gases. There are still other gases like nitrogen in the atmosphere. And while oxygen may have had some impact on the climate, it did not remove all atmospheric gases and cool the planet in the way described.
• Option 4: Life did not go back into the oceans permanently due to oxygen buildup. Organisms adapted to the oxygen - rich environment on land.

Answer:

It allowed complex organisms to tolerate more UV radiation.