Solubility of gases: Carbon dioxide is a gas that dissolves in water, and its concentration increases with pressure Nucleation sites: Rough surfaces provide sites for gas bubbles to form, so the gas ...

more carbon dioxide is produced within your system. If there’s no oxygen to flush it out, there will be a build-up of lactic acid, which can cause cramps, muscle pains and shortness of breath.

(The Earth has lungs. Watch them breathe.) But trees also respire, just as we do, pulling in oxygen and releasing carbon dioxide. And respiration occurs in the cells of all living tree tissues ...

Plants shape Earth’s atmosphere by moving carbon and water vapour. New research sheds light on how they learned to do it – and how it may change in future climates.

The seals’ ability to detect the amount of oxygen in their blood may help them make diving decisions and avoid drowning.

Carbon dioxide (CO 2) comes from both natural sources (including volcanoes, the breath of animals and plant decay ... As plants grow, they take CO 2 out of the atmosphere, and when they die, it is ...

through which plants "breathe." In this process they let out water extracted from the soil in exchange for precious carbon dioxide from the air, which they need to produce sugar in the sunlight ...

Despite cleaner cars on the road, a University of California, Riverside study shows that higher speed limits make city air dirtier.