70% of our atmospheric oxygen (nearly 3 out of 4 breathes you take anywhere on the planet) is due to:
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70% of our atmospheric oxygen (nearly 3 out of 4 breathes you take anywhere on the planet) is due to Photosynthesizing ocean organisms.
Explanation:
- These are tiny microorganisms and are known as cyanobacteria.
- These are living on earth since ancient times and filling the atmosphere with oxygen.
- As there is no light in the depth of ocean these microorganisms carry out the photosynthetic process in low light conditions in oceans.
- These blue-green algae microorganisms are responsible to produce 70% of atmospheric oxygen.
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70 per cent Earth’s oxygen comes from tiny ocean plants – called "phytoplankton" – that live near the water’s surface & drift with the currents.
Explanation:
- Phytoplankton "produce" "more oxygen" than all plant life on the Earth & are essential sustaining the atmosphere of the Earth. Phtyoplankton live near the surface of the water & drift with "the currents". Like other plants, phytoplankton photosynthesise using use sunlight & carbon dioxide to prepare food. A by- product of photosynthesis is "oxygen".
- Phytoplankton contribute between "50 to 85 per cent" of the oxygen in Earth’s atmosphere. Phytoplankton blooms in spring when there is more available nutrients & light. Phytoplankton usually range in size from 0.002mm-1mm and comprise dinoflagellates, diatoms, Ciliata, Cyanobacteria, & Radiolaria.
To know more
what are phytoplankton? (journey to the end of the earth written by ...
https://brainly.in/question/42012
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