H2O
Transpiration, precipitation, evaporation
N2
-atmospheric nitrogen
-can't be used from plants to animals as a nutrient but can be used to breathe
-cycle always starts and ends with N2
NH4+
#NAME?
NO3-
-Nitrate
-used by plants and animals
-nitrogen fixation (-NH4 becomes No3 )
-denitrification
NO
say NO to NO
- acid rain when enters atmosphere
PO4 3-
Phosphate
- slowest moving cycle
- not in the atmosphere
- used in fertilizers - reservoirs rocks underground, glaciers
H2S
hydrogen sulfide
- anaerobic respiration
- smells like eggs
- acid rain
DMS
#NAME?
How does the phosphorous cycle differ from the rest?
1. slowest
2. not in the atmosphere
How is acid rain formed?
DMO, H2S, NO
pollution, fossil fuels, fires
How is carbon important to life-essential compounds?
1. proteins
2. lipids
3. dna
4. carbs
How are compounds cycled in and out of the atmosphere?
1. Biological Processes
- sulfur: anaerobic respiration
-carbon: photosynthesis and aerobic respiration
2. Human Intervention
- pollution
-fertilizer (nitrogen, phosphate, potash)