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Photosynthesis by plants and phytoplankton, and respiration by living organisms help maintain the percentage of atmospheric oxygen at relatively constant levels. Photosynthesis produces oxygen as a byproduct, while respiration consumes oxygen but also releases it back into the atmosphere.

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Which two processes are responsible for keeping the percentage of atomospheric oxygen at relatively constant levels?

Photosynthesis and respiration are the two processes that help to maintain the percentage of atmospheric oxygen at relatively constant levels. Photosynthesis by plants and other organisms produces oxygen, while respiration by animals and other organisms consumes oxygen. The balance between these two processes helps keep atmospheric oxygen levels stable.


Which two processes are responsible for keeping the percentage of atmospheric oxygen at relatively constant levels?

Oxygen is produced by plants and blue-green algae and consumed by burning and animals breathing.


What 2 processes are responsible for keeping the percentage of atmospheric oxygen at a constant level?

Photosynthesis by plants and algae, and respiration by animals and other organisms help maintain the percentage of atmospheric oxygen at a relatively constant level. Photosynthesis consumes carbon dioxide and produces oxygen, while respiration does the opposite.


Which two processes are responsible for keeping the percentage of atmospheric oxygen the constant levels?

Oxygen is produced by plants and blue-green algae and consumed by burning and animals breathing.


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