Question

How did the formation of the ozone layer contribute to the existence of life on Earth? It blocked the Sun’s harmful UV rays. It caused water vapor to cool, condense, and collect. It released large amounts of oxygen into the air. It warmed Earth’s surface, preventing materials from freezing.

Answer 1

the right answer is a

Step-by-step explanation:

Answer 2

It blocks UV rays from the sun

Step-by-step explanation:

The formation of the ozone layer contributes to the blocking of the harmful UV rays of the sun. Usually these rays would be extremely harmful to organisms and while they cant be seen they change the chemical structure of molecules