By what means is Oxygen being added to the atmosphere?

Answer 1

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Answer 2

There are several sources of atmospheric carbon dioxide CO2. Some add CO2 to the atmosphere (causing global warming), others cycle it as part of the natural carbon cycle.

ADDED emissions to the atmosphere:

• Volcanic outgassing
• The burning of fossil fuels (coal, oil, gasoline, natural gas), for heating, power generation and transport
• Some industrial processes such as cement making.

RECYCLED emissions (carbon cycle):

• Burning organic matter, including biofuels
• The respiration processes of living organisms
• The natural decay of organic material in forests and grasslands, such as dead trees
• Produced by various microorganisms from fermentation and cellular respiration.

Answer 3

In general outline, photosynthesis is the opposite of cellular respiration, where glucose and other compounds are oxidized to produce carbon dioxide, water, and release chemical energy. Photosynthesis produces oxygen and water as by products.
Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH.
During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
Most organisms that utilize photosynthesis to produce oxygen use visible light to do so, although at least three use infrared radiation.
The organisms that do this are green plants of one sort or another, like trees or grasses.

Answer 4

Oxygen is added to the atmosphere primarily through photosynthesis, where plants and other photosynthetic organisms produce oxygen as a byproduct. Additionally, oxygen can be released into the atmosphere through physical processes like the diffusion of oxygen from oceans into the air.

Answer 5

Photosynthesis, the process that plants (and plankton) use to convert carbon dioxide into energy for themselves. And eject oxygen like we eject carbon dioxide.

Answer 6

Oxygen is being added to the atmosphere by plants. Oxygen is also being added to the atmosphere in the form of water vapor when water on the ground evaporates.

Answer 7

Plants and trees especially add oxygen to the atmosphere