eutrophication Flashcards
what are the two types of firtiliserd
artificial and natural
give an example of an artificial firterliser
NPK
what is eutrophication
excess richness of minerals in a body of water
what is the main cause of eutrophication
leaching
what is leaching
where firterlisers from plant soil leak into rivers and streams
what does this influx of chemicals into water cause
nitrate levels to rapidly increase
what does a rapid increase of nitrate cause
rapid growth of alege
what is bad about rapid algae growth
the algea bloom on water surface absorbing all the sun light
what does this absorbtion of sunlight mean
plants bellow cannot photosynthesise
what does this then lead the plants to do
die
what does the death of plants mean for bacteria
increased food supplie
what does this increased food supply mean
rapid replication
if there are lots of bacteria what do they use up
co2
what does lotys of bacteria being present mean for the other organisms
bacteria cause a rapid growth in co2 which overpowers o2 meaning o2 levels fall
what does the falling of o2 levels mean
aquatic animals suffocate and die
