The excessive presence of ________ mainly causes eutrophication in lakes.
Nitrogen and phosphorus
Excessive nitrogen and phosphorus, often from fertiliser runoff, mainly causes eutrophication in lakes by promoting excessive algae growth.
Calcium carbonate, iron and copper, and silica do not drive the nutrient-rich conditions that lead to eutrophication in the same way.
Hence, 'Nitrogen and phosphorus' is the correct answer.
Which one of the following cities is associated with Biosaftey protocol to the Convention on Biological Diversity (2000) ?
The following six (6) items consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the answer using the code given below.
Statement I: Phytoplankton produce most of the organic carbon in the ocean.
Statement II: Algae are produced in the cold water biome.
Which one of the following is the correct sequence about various levels of organization of Biosphere?
In India, Project Tiger started in ________.
The process of wastewater treatment is commonly called ______ treatment.