The nitrogen cycle is a process in which nitrogen

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surfaces for the marine component. The nitrogen cycle is a process in which nitrogen circulates among the atmosphere, soil, and organic compounds, including through nitrogen fixation and nitrification. The phosphorus cycle is a process in which phosphorus circulates through the lithosphere, hydrosphere, and biosphere. Both of these cycles are used in fertilizer and cycle between living things and the environment. Photosynthesis
Conduction a ff ects air temperature on Earth. For example, during the day, sunlight heats the ground, which in turn heats the air directly above it via conduction. Radiation is the transfer of energy between two objects by electromagnetic waves. Heat radiates from the ground into the lower atmosphere. An example of the first law of thermodynamics in a desert ecosystem would be how jackrabbits get their energy from the creosote plant, and the bobcat gets its energy by eating jackrabbits. Desert area have some of the highest albedos among landforms. On the other hand, the ocean surface has a low albedo because instead of reflecting sunrays, it absorbs them. The desert is an open system because it is not under a controlled-environment and exchanges both energy and matter with its surrounding environments, something that closed systems do not do.

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