STEP ONE phosphate in rocks, STEP TWO erosion of rocks releases phosphates (PO4 3-) components, STEP THREE Plants use the phosphorus compounds to construct molecules they need, STEP FOUR Animals consume plants STEP FIVE animals and plants decompose and phosphorus and phosphates go into the soil and rocks, END OF CYCLE
Phosphates from dead marina animals are depositied to the floor as sediment, STEP TWO, sediments become rock and part of the sea floor, STEP THREEE erosion/mining release phosphate compounds from the sea floor, STEP FOUR phophates are taken in by animals to make bones, cycle starts over
Digging and Mining, Clear cutting and removing vegetation, overuse of fertilizers and other products which contain large concentrations of phosphorus
Mining and Digging
humans dug and mine for phosphates to use as fertilizers and detergents using toxic chemicals, destroys landscape and causes P runoff
Clear Cutting and removing vegetation
when forests are burn/cut, the remaing P in the soil is washed away by rain leaving unproductive land.
causes explosive algae/cyanobacteria growth, block sunlight from plants on bottom, plants decay, aerobic bacteria that needs oxygen pulls it from water and decomposes plants, not enough oxygen, fish die, creates a dead zone