24 Dead zones are areas found in the oceans and some large

Last updated: 7/23/2022

24 Dead zones are areas found in the oceans and some large lakes where there is not enough oxygen to support life. Algae blooms occur when excess nutrients are introduced as pollutants from fertilizers, sewage-treatment plants, and the burning of fossil fuels. When the algae die and undergo decay, bacteria rapidly use the oxygen in the area. Which human activity would most likely result in a decrease in the size and number of dead zones? (1) irrigating fields and lawns to increase runoff into the ocean and rivers (2) building more coal-fired electrical generating plants (3) reducing the use of chemicals on farm fields courses (4) constructing more sewage-treatment plants on the shores of lakes and rivers