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What produced the oxygen found in the earths atmosphere?

Oxygen in Earth's atmosphere is primarily produced through photosynthesis by plants, algae, and cyanobacteria. During photosynthesis, these organisms use sunlight to convert carbon dioxide and water into glucose and oxygen. Approximately half of the oxygen in Earth's atmosphere is produced by phytoplankton in the ocean.


Which important element was missing in earths early atmosohere?

Oxygen was the important element missing in Earth's early atmosphere. It was only produced later by photosynthetic organisms.


Earths early atmosphere was changed dramatically by the evolution of?

photosynthetic organisms, like cyanobacteria, which produced oxygen as a byproduct of photosynthesis. This led to the increase in atmospheric oxygen levels, changing the composition of Earth's early atmosphere.


What gas was not found in earths early atmosphere but was produced by photosynthesis?

Carbon dioxide


How did oxygen first enter earths athmosphere?

Oxygen first entered Earth's atmosphere through the process of photosynthesis by early cyanobacteria and other photosynthetic organisms. These organisms produced oxygen as a byproduct of their metabolic processes, gradually increasing the amount of oxygen in the atmosphere over millions of years.


Which organisms do scientists estimate more than 50 percent of the oxygen in earths atmosphere?

Scientists estimate that more than 50 percent of the oxygen in Earth's atmosphere is produced by phytoplankton in the ocean through photosynthesis. Phytoplankton are microscopic marine organisms that play a crucial role in the global oxygen cycle.


What is the flash of light produced when a meteoroid passes through the earths atmosphere?

meteor ^v^


How much do humans currently consume of the available food crops and medicine produced by earths organisms causeing a potential threat to biodiversity?

Humans currently consume a great amount of the available food crops and medicine produced by earths organisms. This is a threat because some of these organisms are rare.


What produced oxygen in earths atmosphere?

Oxygen in Earth's atmosphere was produced through the process of photosynthesis by cyanobacteria and early algae, starting around 2.5 billion years ago. These organisms converted carbon dioxide and water into glucose and oxygen using sunlight as an energy source. This oxygen began accumulating in the atmosphere and eventually led to the development of the oxygen-rich atmosphere we have today.


What greenhouse gas produced by humans activities has dramatically increased in earths atmosphere?

CO2; Carbon Dioxide


What gases where present in early earths atmosphere?

The early Earth's atmosphere consisted mainly of carbon dioxide, water vapor, nitrogen, and small amounts of methane and ammonia. Over time, as photosynthetic organisms evolved and produced oxygen, the atmosphere gradually transitioned to contain more oxygen and less carbon dioxide.


Which group of organisms is most responsible for changing the compisition of earths early atmosphere?

Cyanobacteria are the group of organisms most responsible for changing the composition of Earth's early atmosphere. Through photosynthesis, they released oxygen into the atmosphere, fundamentally altering its composition and paving the way for aerobic organisms to evolve.