helium
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, 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.
autotrophic prokaryotes!
Methane and carbon dioxide.
One producer of natural gas is the earth itself. Deep in the bowels of planet earth, gasses and chemicals are constantly mixing. Rotted and compressed dinosaur flesh mingling with water and rocks to form natural gas.
One producer of natural gas is the earth itself. Deep in the bowels of planet earth, gasses and chemicals are constantly mixing. Rotted and compressed dinosaur flesh mingling with water and rocks to form natural gas.
Ozone is a gas that exists naturally in the upper hemispheres of earth. It can be produced by ultraviolet light
The waste gas produced by plants as they respire is oxygen. This is why plants are very important to the earth. Without plants, there probably would not be enough oxygen in the air for all to breathe.
The Journey to the Center of the World was produced in 1959. This was the old one. The new 3D one was produced in 2008
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.
This gas is carbon dioxide