oxygen cycle

This key link in the oxygen cycle is necessary for much of the biodiversity present on earth.

Some of these organisms contribute significantly to global ecology and the oxygen cycle.

Prosaic red warning lights came on, then began to blink with the oxygen cycle.

I have probably simplified it beyond the truth, but we do not know many of the details of just how the oxygen cycle works.

Marine organisms contribute significantly to the oxygen cycle, and are involved in the regulation of the Earth's climate.

The following tables offer estimates of oxygen cycle reservoir capacities and fluxes.

The main driving factor of the oxygen cycle is photosynthesis, which is responsible for modern Earth's atmosphere.

The unusually high concentration of oxygen gas on Earth is the result of the oxygen cycle.

See oxygen cycle capacities and fluxes.

The oxygen cycle is the movement of oxygen within and between its three main reservoirs: the atmosphere, the biosphere, and the lithosphere.

In his calculation, Kelvin assumed that photosynthesis was the only source of free oxygen; he did not know all of the components of the oxygen cycle.

Failures in the oxygen cycle within the hydrosphere (the combined mass of water found on, under, and over the surface of a planet) can result in the development of hypoxic zones.

Oxygen cycle devices are much liked by combat divers and underwater photographers, as they make far fewer bubbles than aqualung-type (open circuit) sets, and those bubbles could betray the diver.

Mineral cycles include carbon cycle, sulfur cycle, nitrogen cycle, water cycle, phosphorus cycle, oxygen cycle, among others that continually recycle along with other mineral nutrients into productive ecological nutrition.

Population growth, he suggests, cannot persist, because we are exhausting the earth's mineral and energy supplies, and because we depend on delicate ecosystemic cycles like the carbon, nitrogen and oxygen cycles - and the mass extinction we are precipitating risks disturbing them.

Teaching Activity: The Carbon Dioxide- Oxygen Cycle Students will describe the natural cycling of oxygen and carbon dioxide in the Earth system and analyze changes in the Earth's carbon cycle as a result of human activity.

Though the Bosch reaction would present a completely closed hydrogen and oxygen cycle which only produces atomic carbon as waste, difficulties maintaining its higher required temperature and properly handling carbon deposits mean significantly more research will be required before a Bosch reactor could become a reality.

In several studies of Betty's Brain by Biswas and collaborators, they trained students by having them create models of the oxygen cycle in a water-based ecosystem and then assessed them by having them create models of the nitrogen cycle in a land-based ecosystem.