How does photosynthesis affect the composition of Earth's atmosphere?

Question

Weather & Climate class!!!

Answer 1

Photosynthesis is the process by which chlorophyl in plants uses sunlight to break down carbon dioxide. The carbon is then combined with nutrients from the soil to create sugars which nourish the plant. The byproduct of this process is oxygen. Therefore photosynthesis converts carbon dioxide into oxygen.
This has been a vital process for Earth's atmosphere throughout geological history.

Earth's very early atmosphere had little free oxygen, so it would have been toxic to humans. The first algae on the planet began to produce oxygen around 2.8 Billion years ago. The oxygen was a toxic gas to the algae back then, and when enough oxygen formed, the algae died back. This is why iron rich rocks known as banded iron formations in Australia have alternating layers of iron rich and iron poor sediments. Oxygen caused the iron in the sediments to rust and wash away when the gas was abundant, and fix in place when it was not. Gradually life forms evolved that were tolerant to oxygen and we evolved from this life.

So the more photosynthesis that takes place, the more oxygen there is in our atmosphere.

Answer 2

Everything is pollution. Pollution is just another word for colorful sky. It means that stuff is in the sky that looks different but in actuality its all the same and the sky will always be the sky. If humans can't adapt to breath or live in hot zone then they probably just can't evolve at all and I will forever consider ya'll the lowest form of life lol. Luckly for you guys I care about all life heh :)

Answer 3

when plants photosynthesize,they take in carbon dioxide and release oxygen in turn...carbon dioxide and oxygen are major components of the atmosphere.Photosynthesis has a huge effect on the composition of the earth's atmosphere

Answer 4

photosynthsis returns oxygen to the atmosphere which is otherwise used up in respiration ,oxidisation and combustion.
God bless, gabe