Question

Which of the following would be a result of eutrophication of a lake?

Answer 1

Answer:

Eutrophication is an enrichment of water by nutrient salts that causes structural changes to the ecosystem such as : increased production of algae and aquatic animals, deletion of fish species, general deterioration of water quality and other effects that reduce and preclude use.

Answer 2

Answer:

Harmful algal blooms, dead zones, and fish kills are the results of the eutrophication process.

Explanation:

• Eutrophication is characterized by excessive plant and algal growth due to the increased availability of one or more limiting growth factors needed for photosynthesis, such as sunlight, carbon dioxide, and nutrient fertilizers.
• The excess algae and plant matter eventually decompose, producing large amounts of carbon dioxide.
• Harmful algal blooms occur when colonies of algae grow out of control and produce toxic or harmful effects on people, fish, shellfish, marine mammals and birds.
• Dead zones happen when a body of water gets too many nutrients, such as phosphorus and nitrogen.