global ssyetms

plants use nitrate from soil, animals eat plants, animal dies and decomposers convert this nitrogen into ammonium

nitrifying bacteria converts ammonium into nitrates. only occurs in oxygen-rich environments

process in which nitrogen is cycled throughout the lithosphere, biosphere, and atmosphere.

process in which carbon is cycled throughout all 4 spheres to maintain a constant climate

usable forms of nitrogen

bacteria transforms nitrogen gas into ammonium. occurs during high energy natural events.

decomposers turn nitrogen left from decomposing animals into ammonium. this ammonium is later transformed into nitrate from plant consumption

converts nitrates back into nitrogen gas, therefore returning nitrogen back into the atmosphere.

78% of our atmosphere

21% of our atmosphere

1% of our atmosphere

earth sphere composed of rocks, tectonic plates, crust and upper mantle

earth sphere composed of all water on earth

earth sphere composed of all gases above the earth’s surface that protects the earth from radiation

earth sphere composed of all living organisms on earth

where all weather occurs in the earth’s atmosphere

layer of the atmosphere in which protects us from uv rays (ozone layer)

layer in the atmosphere which defends us from meteoroids.

absorbs all of the sun’s radiation in which protects the earth. hottest layer of the atmosphere

step in the carbon cycle. carbon is absorbed by plants and used as nutrients.

step in the carbon cycle. glucose in plants is consumed by animals and passed on.

step in the carbon cycle. decomposers break down tissue of plants and animals to obtain carbon.

step in the carbon cycle. glucose obtained from plants is broken down into energy and carbon dioxide is released into the atmosphere.

step in the carbon cycle. fossils are converted into fuel such as coal. coal and such is then extracted and carbon is obtained.

step in the carbon cycle. carbon dioxide present in the water and fossils sink to the ocean floor and form in sedimentary rocks.

carbon burned from fuel and released as carbon dioxide into the atmosphere.