Final answer:
The correct statements are 1) and 2). Statement 1 is true because when phosphorus is not bound in rocks, it moves quickly through land food webs. Statement 2 is true because a decrease in phosphate-rich laundry and dish detergents can help reduce eutrophication and algal blooms in waterways.
Step-by-step explanation:
The correct statements are 1) and 2). Statement 1 is true because when phosphorus is not bound in rocks, it can move quickly through land food webs. However, constant use of phosphate-rich fertilizers can lead to nutrient overload, eutrophication, and a decrease in oxygen in water bodies. This can have negative effects on ecosystems. Statement 2 is true because a decrease in phosphate-rich laundry and dish detergents can help reduce eutrophication and algal blooms in waterways.