Which one of the following best describe a eutrophic lake?
A. algae bloom, low oxygen levels, high diversity of species.
B. algae bloom, high diversity of species. low oxygen levels,
C. algae bloom, low oxygen levels, high diversity of species.
D. algae bloom, low oxygen levels, high diversity of species.
http://en.wikipedia.org/wiki/Eutrophic
That did not help very much.
The best description of a eutrophic lake is option C: algae bloom, low oxygen levels, high diversity of species.
To determine the best description of a eutrophic lake among the given options, we need to understand what eutrophication entails. Eutrophication is a natural process that occurs when an excessive amount of nutrients, such as nitrogen and phosphorus, is added to a body of water. This excess nutrient input stimulates the growth of algae and other plants. As a result, these lakes become enriched with nutrients and experience several changes.
Now let's examine the given options:
A. Algae bloom, low oxygen levels, high diversity of species.
B. Algae bloom, high diversity of species, low oxygen levels.
C. Algae bloom, low oxygen levels, high diversity of species.
D. Algae bloom, low oxygen levels, high diversity of species.
Among the options provided, the best description of a eutrophic lake is C. This is because eutrophic lakes are characterized by the following features:
1. Algae Bloom: The excessive nutrients in eutrophic lakes cause a rapid increase in algae growth. This leads to the formation of dense algae blooms on the lake's surface.
2. Low Oxygen Levels: As the algae and other plants die and decompose, bacteria break them down, consuming the available oxygen in the water. This depletion of oxygen leads to low oxygen levels, which can be harmful to aquatic organisms.
3. High Diversity of Species: Despite the negative impacts of eutrophication, the abundance of nutrients can also support a high diversity of species. These lakes can often sustain a variety of plant and animal life.
Therefore, option C, "Algae bloom, low oxygen levels, high diversity of species," best describes a eutrophic lake.