Answers

2015-10-03T20:52:21+08:00
-nitrogen cycle
1
.fertilizer
2.lightning
3.bacteria
4.detritus
5.decomposers

-phosphorus
1.sediment
2.plants
3.rock
4.mining
5.animals

-water
1.respiration 
2.evaporation
3.precipitation
4.transpiration
5.condensation



0