Starting in the mid-20th century, scientists began to track rising CO2 levels, at the Mauna Loa Observatory in Hawaii on the north slope of the Volcano providing a continuous record that shows a steady increase in atmospheric CO2 concentrations. However a volcano always eject carbon dioxide. The carbon dioxide levels at the Mauna Loa are … Read more
Oxygen is primarily made in nature through photosynthesis, a process used by plants, algae, and cyanobacteria. These organisms use sunlight, water, and carbon dioxide to create energy, releasing oxygen as a byproduct. This process has been ongoing since early microorganisms produced oxygen, gradually creating the oxygen-rich atmosphere that exists today. Oxygen is the most abundant … Read more
Oxygen is vital for humans because it enables cells to produce the energy needed to survive and perform all bodily functions. When we breathe in, oxygen enters the bloodstream, travels to the cells, and is used to break down food for energy. The body’s waste product from this process, carbon dioxide, is then carried back … Read more
All life requires nitrogen compounds, e.g., proteins and nucleic acids. Air, which is 79% nitrogen gas (N2), is the major reservoir of nitrogen. But most organisms cannot use nitrogen in this form. Plants must secure their nitrogen in “fixed” form, i.e., incorporated in compounds such as: nitrate ions (NO3โ), ammonium ions (NH4+) and urea (NH2)2CO. … Read more
You inhale nitrogen along with oxygen because air is a mixture of gases, with nitrogen making up about 78%. Your body does not use this nitrogen for metabolic processes; it is mostly inert and is exhaled unchanged, along with carbon dioxide. Inhalation: When you breathe, you inhale a mixture of gases, including roughly 78% nitrogen, … Read more
The Hunga Tonga volcano released a relatively small amount of sulfur dioxide for a cooling effect, with estimates ranging from 0.42 million tonnes to 1.5 million tonnes (0.42 to 1.5 Tg) injected into the stratosphere. While this was much less than previous volcanic eruptions like Mount Pinatubo, it still caused a temporary cooling effect primarily … Read more
Sulfur is in the atmosphere today, primarily as sulfur dioxide (๐๐2) from both natural sources like volcanoes and human activities like burning fossil fuels. While it’s a trace gas on Earth with concentrations around 15 parts per billion (ppb), it’s a major component of other planets’ atmospheres and has significant effects on Earth’s air quality … Read more
The atmosphere is a system of gases, with the main components being nitrogen (78%) and oxygen (21%), and trace amounts of other gases like argon (0.9%), carbon dioxide (0.04%), and water vapor (0-4%). It also includes other trace gases such as neon, helium, methane, and nitrous oxide, as well as aerosols (tiny particles). These components … Read more
Argon has existed in the Earth’s atmosphere since its formation, gradually accumulating over billions of years from the radioactive decay of potassium-40. Its presence was suspected as early as 1785 by Henry Cavendish, who found a small, unreactive gas remaining after separating nitrogen and oxygen. However, it wasn’t formally discovered until 1894 by Lord Rayleigh … Read more
Earth’s atmospheric nitrogen originated from the primordial solar system, likely trapped in the rocks that formed the planet and released through volcanic activity. Its current high abundance (78%) is due to its stability; the strong triple bond between the two nitrogen atoms makes it inert and resistant to chemical reactions that would have consumed it … Read more
