write a short note on oxygen and nitrogen cycle(max 2 pages of A4 sheet)
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Answer:
Explanation:
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulate:s among atmosphere, terrestrial, and marine ecosystems.Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
Oxygen is an important element to life on Earth. t is the most common element of the humarn ody . It makes up about 65 % of the mass of the human body. Most of this is in the form of water H20 ) . Oxygen also makes up about 30 % of the arth and 20 % of the atmosphere . Oxygen is constantly being used and created by different processes on planet Earth. All of these rocesses together make up the oxygen cycle The oxygen cycle is interconnected with the carbon cycle , oxygen is used and cycled by plants and animals. Plants are the main creators of oxygen in the atmosphere hrough the process of photosynthesis. Here the ree uses sunlight and carbon dioxide to produce energy and releases oxygen. The giraffe breathes in the oxygen and then breathes ut carbon dioxide. The plant can then use this carbon dioxide and the cycle is complete.