Question

which of the following can be natural sources of water pollution?
a. volcanic activity
b. earthquakes
c. algae blooms
d. all of the above
please select the best answer from the choices provided
a
b
c
d

Explanation:

• Volcanic activity can release pollutants like ash and chemicals into water.
• Earthquakes can disrupt natural water systems, causing sediment or contaminants to enter water.
• Algae blooms (natural, e.g., from nutrient cycles) can deplete oxygen and pollute water. So all (a, b, c) are natural water pollution sources.

Answer:

D. all of the above