Question

Fertilizer runoff has a negative impact on aquatic ecosystems because _______.
a.
it causes plants and algae to grow quickly, suffocating organisms in the water
b.
phosphorus is not found in nature
c.
phosphorus is poisonous to living organisms
d.
living organisms do not require phosphorus in order to survive


Please select the best answer from the choices provided

A
B
C
D

Answer 1

A

Fertilizer runoff adds excess nutrients (like phosphorus and nitrogen) to waterways, causing rapid growth of algae and aquatic plants (algal blooms). When the algae die and decompose, oxygen is depleted, which can suffocate fish and other organisms.