Many people think that all the oxygen on our planet is produced by plants but all this is a myth.

It's very common to think that most of the oxygen we breathe comes from trees and jungles, however, terrestrial ecosystems produce like a 28% in the world. According to various studies, at least 70% is produced by marines plants.

The ocean produces oxygen through the plants phytoplankton, seaweed, algae and plankton that live in it. These plants produce oxygen as a byproduct of photosynthesis, a process that converts carbon dioxide and sunlight into sugar that the body use to obtain energy.

One type of phytoplankton, the Prochlorococcus, release countless tons of oxygen into the atmosphere and has achieved fame as the most abundant photosynthetic organism on the planet. It's stimated that Prochlorococcus provides oxygen for one out of every five breaths we take.

However, some scientists believe that phytoplankton levels have been reduced by 40% since 1950 due to the warming of the ocean. The nutrients from these organism reach the surface as a result of water currents that circulate cold water and nutrients from the deeper water to warmer surface water.

As the ocean heat up, there is less circulation of hot and cold water through the global conveyor belt, so there are fewer nutrients for phytoplankton. 70% is a really good part of the total exigen produced, so the decrease of the phytoplankton affects the ecosystem to a greater extent.

In conclusion, even though the destruction of all the forests would mean a reduction of oxygen in 28% wouldn't end life on the planet, this would be a serious blow to the balance of nature, basing us on the theory of the butterfly effect, which says that flutter of a butterfly, however small, can generate a storm on the other side od the world.