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Oxygen - 3rd Std
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is there Oxygen in the Air? How much?
Yes, 21%
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Can Phytoplankton be seen with the Naked Eye?
No, they are too small to be seen with the naked eye
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When was Oxygen Created on Earth, and How?
Millions of years ago, tiny creatures called Blue Algae released Oxygen through Photosynthesis
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What is the Symbol of Oxygen?
O
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How do Phytoplankton give out Oxygen?
They take in Sunlight, Water and Carbon Dioxide and turn it into Energy through a process called Photosynthesis
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How much Oxygen in the Air is given out by them?
50%
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Sometimes we can see Phytoplankton. How can we see it?
Sometimes we see it on the surface of the water as Green Patches
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Which State of matter is Oxygen?
Gas
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Is Oxygen Visible or Invisible? Is it a Solid, Liquid or a Gas?
Invisible, It is a Gas
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Do all the Oxygen we breathe come from Trees?
No, only 20%. Rest comes from Ocean Plants called Phytoplankton
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