jueves, 2 de junio de 2016

Will we run out of breathable oxygen?

The scientists think that the fitoplancton, principal source of atmospheric oxygen, may reach a critical point of dearth.
According to some American scientists, in some decades, humanity will face the problem of the lack of oxygen in the atmosphere due to the decreasing of filoplancton in the aquatic surface.
A group of scientists of Michigan’s University, observed the effect that the increasing temperature had on the fitoplancton’s metabolism while they were investigating the surface of the world’s oceans. The scientists confirm their theories about what will happen at the end of the century, a lack of filoplancton.
After examining about 130 species of filoplancton, especially the ones that develop on the temperature zone and the ones at the areas near the polar regions. finally, the biologists concluded that the fitoplancton must reproduce in lower temperatures that the ones that are present during the year.
So, according to some preliminary conclusions, the tropical species of filoplancton are more sensible to the global warming. Due to all these processes of climate change and the increasing of the temperatures, all the plankton of the tropical area could be reduced to the poles, where it can also disappear.
Burning oil, coal, gas, wood or other organic materials uses molecular oxygen, the O2 we breathe, to break carbon-hydrogen bonds and release energy. This reaction, better known as combustion, also pairs each broken-off, positively charged carbon atom with two negatively charged oxygen atoms, forming carbon dioxide, or CO2.
Although that does cut into the amount of O2 in the atmosphere, there's no need to fill your basement with oxygen tanks. Molecular oxygen, the O2 that we breathe, is the runner-up, at 20.94 percent.
Because of this relative bounty of oxygen, scientists don't fear that carbon emissions will cut off our oxygen supply. "Even if we were to burn another 1,000 billion tons of fossil fuels, we would only decrease the oxygen in our atmosphere to 20.88 percent," he says. And even then, the effects that action would have on the environment—more particulate pollution, hotter temperatures—would be far worse than oxygen depletion.
The conclusion is: It depends on the scientist. Personally I think that we will run out, but that would happen in a hypothetical situation, for example, if the sun disappears, if all the plants die…

https://youtu.be/TU1Ub6aXMqA