Overuse of fertilisers

Question 1

What happens if art fert are used too much in the field or spilled accidentally?

Answer 1

Get washed off into rivers, eventually reaching the sea

Question 2

Name the first step of what happens when fert reach the sea

Answer 2

Excessive nutrients from fertilisers ms are washed off into rivers by rain

Question 3

Name the second step of what happens when fert reach the sea

Answer 3

More nutrients = rapid plant growth, causing algae bloom to form on the surface of rivers

Question 4

Name the third step of what happens when fert reach the sea

Answer 4

Algae blooms blocks sunlight, plants can’t photosynthesise, meaning aquatic plants die

Question 5

Name the fourth step of what happens when fert reach the sea

Answer 5

With less photosynthesis occurring, oxygen levels in rivers will deplete

Question 6

Name the fifth step of what happens when fert reach the sea

Answer 6

Decomposers will decompose dead plants via aerobic respiration depleting O2 in the water