How did life on earth influence the development of earths atmosphere?

Answer 1

because of the first form of life that appeared on Earth and envolved. The new organism called cyanobacteria, used carbon dioxide and water to produce oxygen as a waste product. The oxygen accumulated in the atmosphere, and some of them were converted by the sun into ozone.

Answer 2

The best (and pretty much only) explanation for free oxygen is via photosynthesis. Oxygen readily combines with hydrogen, iron, carbon, and other elements, so without some means of production we would expect all atmospheric oxygen to disappear after a few million years--provided there was any to begin with. This is why no other planet in our solar system besides earth contains appreciable levels of O2.

Most of our O2 comes from so-called "blue-green algae," or cyanobacteria, in the oceans. Since about 1/3 of earth's land surface is covered by forest, roughly 10% of the oxygen in our air must come from trees.

Answer 3

Life on Earth greatly influenced the development of Earth's atmosphere through processes like photosynthesis, which gradually produced oxygen as a byproduct. This oxygen accumulation led to the Great Oxidation Event, changing the composition of the atmosphere and allowing for the evolution of more complex life forms. Additionally, the presence of various organisms has contributed to the cycling and regulation of gases in the atmosphere, shaping its composition over billions of years.