Evaporation-removes water
Condensation
precipitation-Returns water
transpiration
Photosynthesis returns oxygen to the environment (undertaken by the biological processes of plants).
The ocean removes carbon dioxide (CO2) from the atmosphere as part of the carbon cycle. This carbon recycles round and returns to the atmosphere again.Trees, forests and all growing vegetation remove CO2 from the atmosphere, release the oxygen, and store the carbon. If it is a long living tree, it can store that carbon for hundreds of years.
It returns carbon back into the atmosphere.
Just as the Earth's Nitrogen cycle and its Carbon cycle are cyclic, the Earth's Water Cycle is just that; Water Vapor returns to the Atmosphere to complete the Cycle.
Denitrification
Evaporation.
transpiration
Photosynthesis returns oxygen to the environment (undertaken by the biological processes of plants).
Several processes release carbon as gases (carbon dioxide, carbon monoxide, methane) into the atmosphere. Three important processes are fuel combustion, respiration, and methane release. -- Combustion of carbon-based fuels (wood, alcohol, biogas, or fossil fuels) remove oxygen and combine it to form carbon dioxide and other compounds. -- Plant and animal respiration release carbon dioxide. This is the reverse operation of photosynthesis. -- Methane is released from ruminant animals, from decomposition of organisms, and from ocean-bottom clathrate deposits.
it returns to the atmosphere during evaporation
The ocean removes carbon dioxide (CO2) from the atmosphere as part of the carbon cycle. This carbon recycles round and returns to the atmosphere again.Trees, forests and all growing vegetation remove CO2 from the atmosphere, release the oxygen, and store the carbon. If it is a long living tree, it can store that carbon for hundreds of years.
It returns carbon back into the atmosphere.
Just as the Earth's Nitrogen cycle and its Carbon cycle are cyclic, the Earth's Water Cycle is just that; Water Vapor returns to the Atmosphere to complete the Cycle.
Water in the atmosphere precipitates. And in this manner it returns back to earth's surface.
It is all part of the water cycle. It does not matter when it starts since nobody can really define it. However, water cycles involves 2 (or 3, for some) processes most of the time. Evaporation and transpiration (water is lost to surrounding) changes the water to water vapour, then rises up to the earth's atmosphere. It then condenses to form clouds, before it falls as rain, snow or hail as a process of precipitation. These waters would then sip into the ground as groundwater or run into the water bodies by surface runoff before the whole cycle repeats itself.
In computer science, edge-chasing is an algorithm for deadlock detection in distributed systems.Whenever a process A is blocked for some resource, a probe message is sent to all processes A may depend on. The probe message contains the process id of A along with the path that the message has followed through the distributed system. If a blocked process receives the probe it will update the path information and forward the probe to all the processes it depends on. Non-blocked processes may discard the probe.If eventually the probe returns to process A, there is a circular waiting loop of blocked processes, and a deadlock is detected. Efficiently detecting such cycles in the "wait-for graph" of blocked processes is an important implementation problem.