Question

If the river water is polluted with domestic sewage and garbage, it leads to the depletion of

• A. CO${}_2$
• B. CO
• C. O${}_2$
• D. All of the above

Answer 1

The correct option is C O${}_2$

A lake rich in domestic sewage and garbage nutrients will leads to eutrophication. Eutrophication is when the environment becomes enriched with nutrients. This can be a problem in aquatic habitats such as lakes as it can cause algal blooms and other aquatic plants. Following this, overcrowding occurs and plants compete for sunlight, space and oxygen. It deoxygenate the water enough to kill the fish and other animals. Thus, the correct answer is option C.