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Most but perhaps not all began when tiny organisms known as cyanobacteria, or blue-green algae (in the seas and oceans) began conducting photosynthesis: using sunlight, water and carbon dioxide to produce carbohydrates and oxygen.
In fact, all the plants on Earth incorporate symbiotic cyanobacteria (known as chloroplasts) to do their photosynthesis for them today.
What else can I help you with?
What would have happened to the animals if there was no oxygen from the beginning?
There was no oxygen in the beginning. Plant life developed and released oxygen gas into the atmosphere over a long period of time.If that had never happened, there would not be much if any free oxygen in the atmosphere and aminal life as we know it would never have developed.
How do plants MOST likely change the atmosphere in a way that is beneficial for animals?
When animals exhale, they release a gas called Carbon Dioxide (CO2) which can be lethal to animals if the gas is present in large quantities. Through the process of photosynthesis plants absorb carbon dioxide from the atmosphere and release oxygen as a byproduct. This helps animals because they need oxygen in order to breathe.
What would happen to animals if the amount of oxygen the earths atmosphere decreased?
youll die
Does oxygen exist?
Yes, oxygen is a naturally occurring element that is essential for life on Earth. It is a colorless, odorless gas that makes up about 21% of the Earth's atmosphere. Oxygen is also found in compounds such as water and carbon dioxide.
The environment stores many materials the atmosphere stores a lot of what?
The atmosphere stores gases such as nitrogen, oxygen, carbon dioxide, and water vapor. These gases play a crucial role in regulating Earth's temperature and providing the necessary conditions for life to thrive.
Does air come from the sun?
No. Earth's atmosphere most likely originate from volcanic atmosphere. The oxygen is produced by plants.
The most abundant gases are nitrogen and?
The most abundant gases are nitrogen and oxygen in the Earth atmosphere.
What layer of atmosphere holds oxygen in earth?
the layer of the atmosphere that holds oxygen is the troposphere and its pause is tropopause
Why is the atmosphere classed as an oxygen atmosphere?
Earth's atmosphere is mainly nitrogen, oxygen, carbon dioxide, and water vapor. Oxygen is the most reactive of these. Oxygen allows all of the life as we know it on earth. Even though oxygen is less than 1/4 of the atmosphere it is the most important part.
What is the second most abundant gas found in the atmosphere?
The second most abundant gas in the Earth's atmosphere is oxygen, which makes up about 21% of the gases in the atmosphere.
What gives us most of our oxygen in the atmosphere?
Most of the oxygen in Earth's atmosphere comes from photosynthesis carried out by plants, algae, and cyanobacteria. These organisms utilize sunlight to convert carbon dioxide into oxygen during this process.
What has the most oxygen in it?
The oxygen molecule, the form of oxygen found in the Earth's atmosphere, is 100% oxygen. There fore it is the material that has the most oxygen in it.
What are the two most common gases in atmosphere?
Nitrogen & Oxygen.
What is the most of the oxygen that is found in the atmosphere today?
The most of the oxygen in the Earth's atmosphere today comes from photosynthesis by plants and other photosynthetic organisms. They convert carbon dioxide into oxygen as a byproduct, which accounts for approximately 20.95% of the atmosphere.
What is the second most abundant gas in the Earth's atmosphere?
Oxygen
Is most of the earths atmosphere covered with oxygen?
no
What is oxygen most commonly found in?
Oxygen is most commonly found in the air of Earths atmosphere.
