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The majority of our oxygen is made by plants. The chlorophyll reaction (photosynthesis) splits water into hydrogen and oxygen. The hydrogen is used by the plant to make more complex biochemicals. The oxygen is a waste product.
By far the majority of this activity is done by tiny plants in the oceans - perhaps 80%.
In primeval times, before photosynthesis had been invented by the plants, the Earth's atmosphere was oxygen poor, and rich in CO2 and methane. This can be discovered by analyzing ancient rocks.
If you wish to follow this thread further, look up 'snowball earth' in a reliable reference source.
What else can I help you with?
Where did the oxygen in Earth's atmosphere come from originally?
The oxygen in Earth's atmosphere originally comes from the process of photosynthesis carried out by early photosynthetic organisms like cyanobacteria, which released oxygen as a byproduct. Over time, the accumulation of oxygen led to the development of an oxygen-rich atmosphere.
Billions of years ago how did the earth come to have an oxygen rich atmosphere?
The oxygen in Earth's atmosphere was likely produced around 2.4 billion years ago by photosynthetic organisms such as cyanobacteria, which released oxygen as a byproduct of photosynthesis. Over time, this oxygen accumulated in the atmosphere, leading to the development of an oxygen-rich environment.
How did Earth come to have an oxygen atmosph?
Earth's oxygen atmosphere was primarily created by early photosynthetic organisms, such as cyanobacteria, which converted carbon dioxide into oxygen as a byproduct of photosynthesis. Over millions of years, these organisms accumulated oxygen in the atmosphere, resulting in the oxygen-rich environment we have today.
Where does most of the oxygen come from?
Most of the oxygen on Earth comes from photosynthesis, a process carried out by plants, algae, and cyanobacteria. These organisms take in carbon dioxide and water and use sunlight to produce oxygen as a byproduct.
Where does the free oxygen in Earths atmosphere come from?
The free oxygen in Earth's atmosphere primarily comes from the process of photosynthesis carried out by plants, algae, and certain bacteria. During photosynthesis, these organisms use energy from sunlight to convert carbon dioxide and water into oxygen and glucose.Approximately half of Earth's oxygen is produced by marine plants, specifically phytoplankton.
Where does oxygen come from and why is it important to life on earth?
Oxygen is important as it the breathing sources. It also forms ozone which is vital for life on earth.
Where did the oxygen in Earth's atmosphere come from originally?
The oxygen in Earth's atmosphere originally comes from the process of photosynthesis carried out by early photosynthetic organisms like cyanobacteria, which released oxygen as a byproduct. Over time, the accumulation of oxygen led to the development of an oxygen-rich atmosphere.
How did earth come have an oxygen atmosphere?
Early organisms created oxygen from other gases in the atmosphere. More specifically, the methane atmosphere on Earth was supplanted by oxygen generated by microorganisms in the oceans. Today, the vast majority of our oxygen comes from the ocean - mainly plants. Earth came to have a oxygen atmostphere because that is the way God invisoned it, so thats how he made it.
Effects of no oxygen on earth?
Oxygen is main gas of earth. If there is no oxygen in the earth all the life in the earth should die.
Billions of years ago how did the earth come to have an oxygen rich atmosphere?
The oxygen in Earth's atmosphere was likely produced around 2.4 billion years ago by photosynthetic organisms such as cyanobacteria, which released oxygen as a byproduct of photosynthesis. Over time, this oxygen accumulated in the atmosphere, leading to the development of an oxygen-rich environment.
How did Earth come to have an oxygen atmosph?
Earth's oxygen atmosphere was primarily created by early photosynthetic organisms, such as cyanobacteria, which converted carbon dioxide into oxygen as a byproduct of photosynthesis. Over millions of years, these organisms accumulated oxygen in the atmosphere, resulting in the oxygen-rich environment we have today.
Do volcanoes have oxygen?
No. A volcano erupts molten material from inside the earth. Actual fire is not involved:the material is hot to begin with and has been since the formation of the earth.
What planets could the elements carbon hydrogen arsenic oxygen neon helium and iron come from?
Earth
Does air come from the sun?
No. Earth's atmosphere most likely originate from volcanic atmosphere. The oxygen is produced by plants.
What three atoms of oxygen come together?
Three atoms of oxygen come together to form an ozone molecule (O3). This molecule is responsible for protecting Earth by absorbing and blocking harmful ultraviolet radiation from the sun in the stratosphere.
Where do you get your oxygen on earth?
we get oxygen from the trees
How do rainforests help us when you are ill?
many medicines come from the rainforests
