Hello everyone! I hope you all will be fine. Myself Maheen. And I'm masters in CHEMISTRY. Chemistry is not only a subject for me but it's passion for me. It's really interesting for me to study this subject. Some people take it difficult but I think it's not difficult. Actually they are not made to study chemistry. If you love a field it becomes easy for you. By the way if you keep in touch with me I will tell you a lot about my subject, my experience.
It involves the inter- change of oxygen between the elemental form of gaseous O2, contained in a huge reservoir in the atmosphere, and chemically bound O in CO2, H2O, minerals, and organic matter. It is strongly tied with other elemental cycles, particularly the carbon cycle. Elemental oxygen becomes chemically bound by various energy-yielding processes, particularly combustion and metabolic processes in organisms. It is released in photosynthesis. This element readily combines with and oxidizes other species such as carbon in the process of aerobic respiration, or carbon and hydrogen in the combustion of fossil fuels such as methane: CH4 + 2O2 → CO2 + 2H2O Elemental oxygen also oxidizes inorganic substances such as iron(II) in minerals: 4FeO4 + O2 → 2Fe3O3 A particularly important aspect of the oxygen cycle is stratospheric ozone O3. A relatively small concentration of ozone in the strato...
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