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Trees and plant life.
carbon dioxide is taken in by plants and regenerated into oxygen then given off again

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11y ago
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15y ago

Plants because they take in carbon monoxide and give carbon dioxide. So plants

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12y ago

Plants

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Q: What is a major source of oxygen for the earth's atmosphere?
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Related questions

What is the major source of oxygen for the earths atmosphere is?

Plants


What was the major contributor of oxygen to earths early atmosphere?

photosynthsis


Why are the major gases that make up earths atmosphere?

Nitrogen, Oxygen and Argon make up 99% of the atmosphere


Which atmosphere gas is photosynthesis the major source of?

Oxygen is the major source of photosynthesis in the atmosphere. During photosynthesis, plants and other photosynthetic organisms convert carbon dioxide into oxygen through the process of photosynthesis. This oxygen is then released into the air, replenishing the levels in the atmosphere.


What is the major source of free oxygen in atmosphere?

Green Plants


WHAT is the major source of energy for earths system?

The sun is the major external source of energy.


Is the atmosphere the major storage area for earths water?

The atmosphere is ONE OF the major storage areas for Earth's waters


Why do people believe that preservation of the Amazon rain forest is a global concern?

People think it is a major concern mainly because it "IS" a major concern for those of us who would like to keep breathing the oxygen in earths atmosphere, and for those who would like their grand children to have free oxygen available via the earths biosphere.


What are the 4 major components of the earths atmosphere?

The four major components of Earth's atmosphere are nitrogen (78%), oxygen (21%), argon (0.9%), and carbon dioxide (0.04%). These gases help regulate temperature, support life, and protect against harmful radiation.


What is the major atmosphere by-product of photosynthesis?

Oxygen -Sabrina (:


What is a major source of oxygen on which all human life depends on?

A major source of oxygen that all human life depends on is photosynthesis, the process by which plants, algae, and some bacteria convert carbon dioxide and sunlight into oxygen and glucose. These photosynthetic organisms release oxygen into the atmosphere as a byproduct, which humans and other animals rely on for respiration.


Two major gases in the atmosphere are?

Two major gases in the Earth's atmosphere are nitrogen and oxygen. Nitrogen makes up about 78% of the atmosphere, while oxygen accounts for around 21%.