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

Answer 1

Volcanic activity can contaminate water with ash. Earthquakes can lead to problems such as oil drill explosions in the ocean, which contaminates the water. Algae blooms can increase the level of oxygen in the water, contaminating it and killing sea life. So, the best answer would be D. all of the above.