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Most likely, industrial runoff or other forms of pollution have lead to eutrophic conditions (too much phosphate, nitrate, or other chemicals in the water), which were a perfect environment for overgrowth of cyanobacteria (algae). Certain species of cyanobacteria produce toxins that can kill animals (including fish and humans), which killed the fish in the water.

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What are population explosion of algae called?

A population explosion of algae is called an ALGAL BLOOM


What causes algae to die?

Lack of sunlight or nutrients. Algae is essentially a type of plant. Think about typical household plants, if they don't have water, soil, or sunlight, they will die. But algae, unlike household plants, typically live in a body of water, so a lack of water normally is not a cause of death for them. Normally, algae die because there is not enough sunlight or nutrients, possibly because of an algae bloom (too much algae that use up sunlight and nutrients).


How does algal blooms effect the environment?

Algal blooms can have negative effects on the environment by depleting oxygen in the water, which can harm aquatic organisms like fish. They can also release toxins that can contaminate water and harm both aquatic life and human health. Additionally, as the algae die and decompose, they can contribute to an increase in nutrient levels in the water, leading to further ecological imbalances.


What causes a freshwater bloom?

A freshwater bloom is a sudden overpopulation of algae. This is caused by excessive nutrients in the water which act like fertilizers to stimulate algal growth. Common causes could be leaking sewage pipes, runoff from a golf course, sudden release of animal manure during a flood, etc.


Red sea is named after the algal bloom of what?

The Red Sea is named after a type of algae called Trichodesmium erythraeum. This algae can form large blooms in the water, giving the sea a reddish-brown hue.