What is the correct order in which the following appeared during the early evolution of life on Earth?

What is the correct order in which the following appeared during the early evolution of life on Earth?





a. Oxygen, ozone, photosynthesis, life on land
b. Photosynthesis, oxygen, ozone, life on land
c. Life on land, photosynthesis, oxygen, ozone
d. Ozone, oxygen, photosynthesis, life on land
e. Oxygen, photosynthesis, life on land, ozone


Answer: b. Photosynthesis, oxygen, ozone, life on land.


Learn More :