Cyanobacteria also called as blue green algae. They are the photosynthetic prokaryotes. They are found in both marine and freshwater. They are probably the most numerous taxon to have ever existed on earth and the first organism know to have produced oxygen.
oxygen
The most abundant gas in Earth's first atmosphere was likely hydrogen gas (H2), along with smaller amounts of helium and trace gases like methane and ammonia. Over time, these gases were modified as a result of volcanic activity and the emergence of life forms on Earth.
argon forms a fairly considerable part (0.94% by volume, 1.3% by mass) of the Earth's atmosphere
The gas is oxygen.Oxgen is used in photosynthesis and produced in photosynthesis.
helium is a gas and is found only in the earth's atmosphere
helium
Cyanobacteria played a crucial role in changing the Earth's atmosphere by producing oxygen through photosynthesis billions of years ago. This event led to the oxygenation of the atmosphere, which enabled the evolution of more complex life forms and fundamentally altered the ecological balance on Earth.
The first major source of oxygen gas on Earth was likely produced by early photosynthetic bacteria, such as cyanobacteria, through the process of photosynthesis. This process began around 2.3 billion years ago and led to the build-up of oxygen in the atmosphere, known as the Great Oxidation Event.
The evolution of aerobic organisms depended on a metabolic product of cyanobacteria because they used them as a energy source and supply to maintain their health.
oxygen
Oxygen, now about 20% of the atmosphere, was not part of the original atmosphere of hthe Earth. It was produced by plants, after life developed.
Oxygen or O2Oxygen is produced by the process of photosynthesis.
Gloeocapsa magma is a species of cyanobacteria. Cyanobacteria are an ancient line of photosynthesizing bacteria, which photolyze water generating oxygen gas. Ancient cyanobacteria were ancestral to the chloroplasts of all plants on earth. This particular type of cyanobacteria is responsible for creating black stains and streaks on roofs.The bacteria accumulate over time as it feeds on moisture and calcium carbonate.This accumulation begins to show the black stains as the cyanobacteria develop their dark and hard UV-protective outer coating. United Nations Farms
Gloeocapsa magma is a species of cyanobacteria. Cyanobacteria are an ancient line of photosynthesizing bacteria, which photolyze water generating oxygen gas. Ancient cyanobacteria were ancestral to the chloroplasts of all plants on earth. This particular type of cyanobacteria is responsible for creating black stains and streaks on roofs.The bacteria accumulate over time as it feeds on moisture and calcium carbonate.This accumulation begins to show the black stains as the cyanobacteria develop their dark and hard UV-protective outer coating. United Nations Farms
autotrophic prokaryotes!
Methane and carbon dioxide.
Heterocysts containing enzymes.