Question
The line graph below shows the average amount of dissolve nutrients in a body of water each year from 1998 to 2003.
Dissolved Nutrients
14
12
10
Nutrient level (mg/L.)
1999
2000
2001
2002
2003
Year
Which human activity most likely affected this body of water between 2000 and 2003?
adding chemical fertilizers to water
discharging warm water into the body of water
burning fossil fuels
dumping litter in the water
Dissolved Nutrients
14
12
10
Nutrient level (mg/L.)
1999
2000
2001
2002
2003
Year
Which human activity most likely affected this body of water between 2000 and 2003?
adding chemical fertilizers to water
discharging warm water into the body of water
burning fossil fuels
dumping litter in the water
Answers
GPT-4o mini
The likely human activity that affected the body of water between 2000 and 2003 is "adding chemical fertilizers to water." Chemical fertilizers can lead to increased nutrient levels, specifically nitrogen and phosphorus, which can cause nutrient pollution. If the line graph shows an increase in the average amount of dissolved nutrients during that time frame, it suggests that nutrient input, such as from agricultural fertilizers, was impacting the water quality.