swan river and pollution

Question 1

where does the pollution come from

Answer 1

they can be carried into steams from runoff from the land or from industrial and storm water drains

Question 2

What items are domestic pollutants

Answer 2

detergents, oils, cleaners, paints, fertilizers, plastic, metal, grass cuttings,

Question 3

What items are industrial pollutants

Answer 3

wastewater from factories and workshops, from washing down machinery

Question 4

What items are agricultural pollutants

Answer 4

pestcides, animals waste (droppings) coming from paddocks, horse stables, phosphate and nitrate used by farmers

Question 5

why is salt a pollutant

Answer 5

if there is a rise in salt in the water it can kill animals and plants

Question 6

What causes the salt in the water

Answer 6

the clearing of vegetation in agricultural areas. Mainly the deep rooted vegetation which uses up the salt. If they take this vegetation away the salt builds up in the water. They replace the deep rooted vegetation with small plants that need less water so the salt rises to the surface.